What will get: the package comes with 150 pieces of 12-10 AWG yellow 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 , 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 Colour:yellow Material:Polyolefins Package Contents: 150 x Solder seal heat shrink butt wire connectors Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.