Fotag 100pcs Waterproof Solder Seal Heat Shrink Butt Connectors Kit Sleeve Butt Wire Connector Terminals Set Electrical Copper with Case (40 Red 30 Blue 20 White 10 Yellow) Terminal Type: Fully Insulated Female & Male Bullet Connectors Material: Top Quality Copper, Nylon Fit Wire Range : AWG 24 -18 (White) / AWG 22 - 16 (Red) / AWG 16 - 14 (Blue)/AWG 12 - 10 (Yellow) The insulated bullet terminal is easy to connect with electrical wire to strengthen its reliability and safety Used widely in the machine, electric power, home appliance, computer or other automatic equipment's