Easiest wire connector on the market TICONN solder seal connectors will make your wire connection waterproof just in seconds; also it applies some mechanical damage protection and prevents wire corrosion! Our connectors are an irreplaceable tool for fast, reliable and effective wire connection in any place and are appreciated by handymen all over the world! Package Includes: 40 x White Connectors: Suits Cable/ Wire Sizes 0.25-0.34mm² (A.W.G:26-24); 50 x Red Connectors: Suits cable/ wire sizes 0.5-1.0mm² (A.W.G:22-18); 50 x Blue Connectors: Suits cable/ wire sizes 1.5-2.5mm² (A.W.G:16-14); 10 x Yellow Connectors: Suits cable/ wire sizes 4.0-6.0mm² (A.W.G:12-10) 1 x PP Storage Case HOW TO USE: Select the proper size connector for the wires, stripped wires. Insert the stripped wires into the connector. Apply heat evenly to the connector from the 2 ends first until tubing shrinks and the adhesive flows, then continuously apply heat evenly until solder sleeve melt and seal. Note: For best result, please use a hot air gun and rotate the connector to evenly apply heat. Please raise the temperature from low to high gradually when you use the hot air gun to heat the wire connector. Please DO NOT set the high temperature at the beginning, or the surface of connector will be over-heated, which will lead to the tube melt while the solder ring still not melt. Keep the hot air gun at the proper distance. Don't get too close. Technical Specifications: Shrinkage ratio 2:1 Minimum shrink temperature: 80°C Minimum temperature for solder to melt: 138°C Operating temperature :-55? - 125? Waterproof Class: IP 67