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Hero banner showing crimp on butt connectors kit near car engine bay, featuring organized case for workshop projects
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Universal fit design allows these battery wire connectors to provide a firm grip on various post sizes battery wire connectorsPrecision-engineered tool designed as a reliable battery terminal crimper for secure wire connections battery terminal crimper
Battery Cable Lug Crimping Tool Kit & 220PCS Battery Cable Lugs
$129.99 USD $135.98 USD
Spare 11%
Garage Upgrade Kit - 9-in-1 Rechargeable Wire Stripper + Heat Shrink TubingGarage Upgrade Kit - 9-in-1 Rechargeable Wire Stripper + Heat Shrink Tubing
Garage Upgrade Kit - 9-in-1 Rechargeable Wire Stripper + Heat Shrink Tubing
$33.99 USD $37.98 USD
Spare 5%
Bulk rolls of premium-grade material categorized as versatile electrical heatshrink electrical heatshrinkHaisstronica best wire crimper set, FAST-EXCHANGE jaws, purple knob, storage case with dies (10.2M/12-10), blue/yellow handles.
8PCS Crimping Tool Set & Mini Heat Gun & 520PCS Heat Shrink Wire Connectors Kit
$149.99 USD $157.97 USD
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Heat shrink butt terminals organized by size for secure and durable electrical connections electrical connectionsElectrical splice connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24, 9-48A max current.
Monthly Stocking - 10*330PCS haisstronica Heat Shrink Butt Connectors
$237.91 USD $279.90 USD
Spare 15%
Comprehensive assortment of color-coded tubing in various sizes within our professional heat shrink kits heat shrink kitsSpecification chart listing AWG ranges and quantities for ring, fork, male, female, and butt heat shrink wire connectors in red, blue, yellow.
Monthly Stocking - 10*520PCS Marine Grade Heat Shrink Wire Connectors
$467.41 USD $549.90 USD
Spare 10%
Transparent insulating tubing that provides a clear finish as high-quality clear heatshrink clear heatshrinkSpecification chart listing AWG ranges and quantities for ring, fork, male, female, and butt heat shrink wire connectors in red, blue, yellow.
Standard Stock - 5*520PCS Marine Grade Heat Shrink Wire Connectors
$247.45 USD $274.95 USD
Spare 5%
Reliable protective insulation sleeve designed as durable heat shrink for wires heat shrink for wiresSpecification chart listing AWG ranges and quantities for ring, fork, male, female, and butt heat shrink wire connectors in red, blue, yellow.
Light Replenishment - 3*520PCS Marine Grade Heat Shrink Wire Connectors
$156.72 USD $164.97 USD
Spare 10%
Durable copper lug featuring a reinforced opening, designed as an essential metal connector ring connector ringStep-by-step guide for Haisstronica heat shrink butt splice connectors, ensuring sealed and secure wire joints.
Standard Stock - 5*260PCS Marine Grade Heat Shrink Ring Connectors
$134.95 USD $149.95 USD
Spare 5%
Comprehensive set of color-coded electrical terminals and connectors in a professional wiring connectors kit wiring connectors kitStep-by-step guide for Haisstronica heat shrink butt splice connectors, ensuring sealed and secure wire joints.
Light Replenishment - 3*260PCS Marine Grade Heat Shrink Ring Connectors
$85.47 USD $89.97 USD
Spare 15%
Comprehensive kit of color-coded heat shrink solder connectors for rapid and permanent wiring installations shrink solder connectorsStep-by-step guide: Strip, twist, and heat-seal wires with Haisstronica solder butt connectors.
Monthly Stocking - 10*200PCS Solder Seal Wire Connectors AWG 16-14 Blue
$169.91 USD $199.90 USD
Spare 10%
Adhesive-lined heat shrink tubing designed to effectively seal wire against moisture and environmental damage seal wireStep-by-step guide: Strip, twist, and heat-seal wires with Haisstronica solder butt connectors.
Standard Stock - 5*200PCS Solder Seal Wire Connectors AWG 16-14 Blue
$89.95 USD $99.95 USD
Spare 5%
Close-up of a blue heat shrink connector with a pre-installed low-melt alloy ring, known as a blue solder blue solderStep-by-step guide: Strip, twist, and heat-seal wires with Haisstronica solder butt connectors.
Light Replenishment - 3*200PCS Solder Seal Wire Connectors AWG 16-14 Blue
$56.97 USD $59.97 USD
Spare 15%
Comprehensive electrical repair set featuring heat-activated tubing to easily solder & seal wiring in one step solder & sealWhite heat shrink butt connector cross-section, HAISSTRONICA, 3:1 shrink ratio, waterproof adhesive.
Monthly Stocking - 10*500PCS White Heat Shrink Butt Connectors
$254.91 USD $299.90 USD
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Close-up view of internal solder rings in heat shrink sleeves designed to create high-conductivity solder connections solder connectionsWhite heat shrink butt connector cross-section, HAISSTRONICA, 3:1 shrink ratio, waterproof adhesive.
Standard Stock - 5*500PCS White Heat Shrink Butt Connectors
$134.95 USD $149.95 USD
Spare 5%
Professional kit of heat shrink connectors providing a secure and permanent soldering splice for electrical wires soldering spliceWhite heat shrink butt connector cross-section, HAISSTRONICA, 3:1 shrink ratio, waterproof adhesive.
Light Replenishment - 3*500PCS White Heat Shrink Butt Connectors
$85.47 USD $89.97 USD
Spare 10%
Professional wire crimping tool kit with interchangeable dies for high-quality electrical connectors automotive electrical connectors automotiveElectrical splice connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24, 9-48A max current.
Standard Stock - 5*330PCS haisstronica Heat Shrink Butt Connectors
$125.95 USD $139.95 USD
Spare 5%
Crimping pliers and heat gun set with organized terminals, serving as a versatile electrical conector conectorElectrical splice connectors BHT-5.5, BHT-2, BHT-1.25, BHT-0.5, AWG 12-10 to 26-24, 9-48A max current.
Light Replenishment - 3*330PCS haisstronica Heat Shrink Butt Connectors
$79.77 USD $83.97 USD
Spare 15%
Multiple clear packages, each containing yellow heat shrink butt terminals, labeled as 500-piece electrical connectors for bulk use.Step-by-step crimping and heating guide for Haisstronica butt splice connectors.
Monthly Stocking - 10*500PCS 12-10 AWG Yellow Heat Shrink Butt Connectors
$620.41 USD $729.90 USD
Spare 10%
A detailed close-up of different colored heat shrink butt connectors within the segmented yellow compartments of a blue box.Step-by-step crimping and heating guide for Haisstronica butt splice connectors.
Standard Stock - 5*500PCS 12-10 AWG Yellow Heat Shrink Butt Connectors
$328.45 USD $364.95 USD
Spare 5%
A multi-pack of yellow heat shrink butt terminals, suitable for large 12-10 AWG wire, as a specific connector for wire.Step-by-step crimping and heating guide for Haisstronica butt splice connectors.
Light Replenishment - 3*500PCS 12-10 AWG Yellow Heat Shrink Butt Connectors
$208.02 USD $218.97 USD
Spare 15%
Premium set of waterproof heat-shrink tubing and low-melt alloy ring components for effective sealing connectors sealing connectors240PCS waterproof connectors with heat shrink technology for harsh environments.
Monthly Stocking - 10*340PCS Heat Shrink Solder Seal Wire Connectors
$229.41 USD $269.90 USD
Spare 10%
Multi-colored electrical terminal kit designed as a reliable butt splice solder solution for seamless wire repair butt splice solder240PCS waterproof connectors with heat shrink technology for harsh environments.
Standard Stock - 5*340PCS Heat Shrink Solder Seal Wire Connectors
$121.45 USD $134.95 USD
Spare 5%
Efficient electrical repair method using a heat gun to create a durable and waterproof solder wire splice solder wire splice240PCS waterproof connectors with heat shrink technology for harsh environments.
Light Replenishment - 3*340PCS Heat Shrink Solder Seal Wire Connectors
$76.92 USD $80.97 USD
Spare 15%
Haisstronica electrical repair tool kit featuring a ratchet crimper for a solid wire connection wire connectionStep-by-step crimping and heating guide for Haisstronica butt splice connectors.
Monthly Stocking- 10*1000PCS 16-14 AWG Blue Heat Shrink Butt Connectors
$679.91 USD $799.90 USD
BUNDLE MATCH GUIDE

Choose the Right Wiring Bundle for the Repair You Do Most

Use this guide after browsing the products to decide whether you need a connector bundle, tool-and-connector setup, or a broader workshop kit for repeat electrical repairs.

Connector refill bundles

Best when you already own the right crimping tool and need more terminals, connectors, tubing, or repair parts.

Best fit

Choose by connector type, AWG range, and repair environment.

Tool plus connector bundles

Best when the repair needs both the connector and the matching crimper, stripper, or heat source.

Recommended

Use this path to avoid buying a connector kit without the tool needed to install it.

Workshop stock kits

Best for garages, trailers, marine wiring, and repeat repair benches where multiple connector sizes are used.

High value

Buy the broader kit when storage, speed, and size coverage matter more than the lowest item count.

Connector type AWG coverage Tool included Repair frequency Storage box
Next step: choose a bundle when you want a ready-to-use setup. If you only need one connector family, compare wire connectors first.
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