Descriptions:100% brand new and high qualityStandard crimp and then seal heat shrink butt connectorsGuaranteed to hold the strong crimpsDual-walled design， polyolefin tubing in outside and hot melt adhesive in insideAllows visual inspection， prevents corrosion， and provided a waterproof sealFor best results use a hot air gun until it reduces in size and the adhesive flows， filling gaps within the terminalSpecifications:Color: BlueSuits cable/ wire sizes: 1.5-2.5mm2 14-16AWGPackage includes:60Pcs Heat Shrink Butt Connectors (20Pcs/a pack)