More Efficient - Easy connection, no wires, insulated, waterproof. Easy to Use - Transparent for cutting a strip of net to insert inside. High Quality-Compatible with all European standards;Shrinkage ratio:2:1. Easy to Carry - With a plastic case handy, you can take this sealant pack anywhere. WirelessForTubeContact-Reduced in size and will melt and circulate through the soldering wires, to hold your wire never slipping out of the connector. Can be ideal used in marine and automotive applications. Size:100PCS Description: Easy one-step connection of threads. Soldered, insulated and sealed can be ideal. Use in marine and automotive applications. Melt in sealing inside and sealing and with waterproof function. Pull-out strength of extruded connector at high strength polyolefin head. Provide sealing gasket, strain relief, cable control and insulation. Specific: Material :preformed solderrings.Color:red,blue,white,yellow.Dimension:35xRedRebootconnectors:2.7mmDiameter,CableLength0.5-1.0mm(A.W.G:22-18);30xBlueReduceConnectors:diameter4.5mm,1.5 to 2.5mmcable section(A.W.G:16-14) );10xWhiteplusConnectors:diameter 1.7mm,cable cross-section 0.25-0.34mm(A.W.G:26-24);25xYellowRetractable connectors:diameter 6.0mm,cable cross-section 4.0-6.0mm(A.W.G:12-10).Package Included:1x100pcs wire heat connectors( four sizes/colors) are reduced.