Description :  20Pcs Blue Insulated Straight Wire Butt Connector Electrical Crimp Terminal 14-16AWG  100% brand new and high quality Standard crimp and then seal heat shrink butt connectors Guaranteed to hold the strong crimps  Dual-walled design， polyolefin tubing in outside and hot melt adhesive in inside Allows visual inspection， prevents corrosion， and provided a waterproof seal For best results use a hot air gun (You can also find it in our Tools category) until it reduces in size and the adhesive flows， filling gaps within the terminal  Specification :   Color : Blue Suits cable\/ wire sizes : 1.5-2.5mm2  14-16AWG  Package included :   20 x Heat Shrink Butt Connectors  Details pictures :