HOODDEAL 100pcs Insulated Heat Shrink Butt Waterproof Wire Electrical Crimp Terminal Connector 16-22AWG MATERIAL: Heat shrinkable NYLON, Copper and Zinc alloy, AWG 16-22 Butt Terminal Connector SPACE AND MONEY SAVER:This streamlines your cable,Extremely safe and durable, Protect it from water getting in.Instead of electric tape They're far less expensive than any automotive supplier or local hardware store ! USED :Boat trailer,Computer wires,Home circuit,Night fishing,Car etc. USE-METHOD: For best results,Suggest use a hot heat gun.If you don't have a heat gun, you can try used a propane torch or lighter. AFTER-SALE:You are still worried about? Seller delivery time 12-20 days, FBA delivery time of 2 days. If there are quality problems, 100% quick refund, completed within 48 hours