250 PCS Insulated Heat Shrink Electrical Wire Terminals Crimp Connectors Spade Set - Includes Spade, Butt, Fork, M/F Quick, Ring Waterproof Marine Automotive Grade VARIETY FOR ALL APPLICATIONS - Forks, rings, hooks, quick disconnects, and butt connectors included in this set. Find the right connector for all electrical wiring projects DURABLE - Copper + PE + Tinplate provide high tensile strength, elasticity and extreme stretch and mechanical damage resistance, translucent heat shrink tubing eliminates the issue of the barrel opening WATERPROOF - dual-walled insulation design provides waterproof seal ideal for marine and automotive applications, with polyolefin outside and hot melt inside to prevent wire corrosion NO SLIP WIRE CONTACT - thick barrel ensures strong secure crimper every time to prevent wire failure, increase current flow and reduce equipment downtime. When heat is applied, polyolefin tubing reduces in size and the adhesive flows inside the insulation filling gaps within the terminal. WARRANTY - Perfect for all boat, vehicle, home, scientific or commercial projects in need of secure and durable connections. Any issues with our heat shrink butt connectors simply contact us and we will respond within 12 hours