Denew 150 pcs 22-18AWG red solder sealed wire connectors heat shrink butt connectors waterproof insulated electrical butt wire terminals automotive marine electrical terminals What will get: the package comes with 150 pieces of 22-18 AWG red heat shrink butt connectors with heat shrinkable, waterproof and conductive properties, which are sufficient to meet your various needs Insulated and waterproof: the electrical wire terminal comes with outer polyolefin tube and inner hot-melt ring, which can effectively improve waterproof performance, so it is very suitable for the automotive and marine industries Easy to use: you can just put 2 stripped wires into the solder sleeve and heat it with a hot air gun, and the insulating tube will shrink with a shrinkage ratio of 2:1 to form a waterproof seal, so as to complete the connection Practical design: these solder seal wire connectors are different from ordinary heat-shrinkable tubes, designed with solder ring and do not need crimping; The solder seal terminals are transparent and can be accurately inspected when the wires are stripped and inserted inside Scope of usage: the insulated butt splices are useful tools to provide protection for wires, which are often applied in automobile, ship, marine, motorcycle and vehicles, and also applied for scientific wiring projects