This heat shrink wire connector is made of , which can withstand use. Features solid material, which has high durability, not easy to deform. Fine workmanship, practicality. This heat shrink wire connector will make the repair and fix easier and smoother. Features -Color:Assorted Color -Material:Rubber hose - Size: 10.00X6.50X2.50cm/3.93X2.55X0.98in Working temperature: -55~125 Celsius degree Starting shrinkage temperature: 80 Celsius degree Soldering tin starting melting temperature: 138 Celsius degree Soldering tin fully melting temperature: 160 Celsius degree Shrinkage temperature: >160 Celsius degree Dielectrical strength: 1kV Protection level: IP67 - Good electrical conductivity and durability, these electrical connectors have stable working performance. - Strip 0.75cm external coating of lead wire. Insert lead wire into soldering tin ring, move to the middle part, the lead wire cannot hot melt adhesive. - Heating up the heat shrink wire connector, cold it down for 1 minute after heating up. - Suitable for marine and car applications, nice for working on your boat, make sure everything bond correctly. - Strong, wear-resistant, strong load-bearing capacity, not easy to deform and break. Package list: wire connectors