Features:<br /><br />    Standard crimp and then seal heat shrink butt connectors<br /><br />    Guaranteed to hold the strong crimps<br /><br />    Dual-walled design， polyolefin tubing in outside and hot melt adhesive in inside<br /><br />    Allows visual inspection， prevents corrosion， and provided a waterproof seal<br /><br />    For best results use a hot air gun(not include) until it reduces in size and the adhesive flows， filling gaps within the terminal<br /><br />Specification:<br /><br />    100% brand new<br /><br />    Color: Red， Blue， Yellow<br /><br />Size:<br /><br />    Red connector: Suits cable / wire sizes 0.5-1.5mm² 18-22 AWG (40PCS)<br /><br />    Blue connector: Suits cable / wire sizes 1.5-2.5mm² 16-14 AWG (40PCS)<br /><br />    Yellow connector: Suits cable / wire sizes 4.0-6.0mm² 12-10 AWG (20PCS)<br /><br />Package Included:<br /><br />    100pcs x Heat Shrink Butt