Are you looking for a professional, yet heat shrink butt terminal? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? , ! Our professional must meet you needs. It is one of the for you. Features - ColorAssorted Color - Material: Plastic and tin . - Size: about 4.00X3.70X4.00cm/1.57X1.45X1.57in. - Fast, efficient, one-step wire connection. No crimping required. - Polyolefin heat shrink butt connectors improved pullout strength, provides seal, strain , cable check, and insulation. - An easy one step connection of wires, soldered, insulated and sealed. - Can be use in marine and automobile applications. - Polyolefin tubing in outside and hot melt adhesive in inside. Package list: White Solder Heat Shrink Sleeve 70 x Red Solder Heat Shrink Sleeve 60 x Blue Solder Heat Shrink Sleeve 20 x Yellow Solder Heat Shrink Sleeve 600 x Black Heat Shrink Sleeve