No more loose and unsafe connections!Solderstick eliminates the hassle and allows you to focus on rewiring done the right way:Fast andConvenient Connect and Sealyour Wires without crimping or soldering! âIP67 Waterproof âFuss andSafe connectionin seconds! âVariety of sizesfor your boat, automobiles or any DIY electrical projects. âComply with all Relevant Standards: ROHS, ISO 9001:2008, SGS and CE standards Strip wire insulation 1/3 inch on both wire ends. Choose the right connector size for your wires Step 2 : Position Wire into Connector Use a heat gun or simply a lighter to melt and shrink the connector tubing. Allow the terminal to cool down. EASYIDENTIFICATION Color-coded tubing makes it easy to identify the right size connector for every application. Measure your wire, and easily choose the right connector by looking at the wire size chart on the box. PERFECTFOR PROFESSIONAL OR EMERGENCYUSE âBoats âAutomobiles âHome DIY wirings âAudio Systems âElectrical Projects Im doing a lot of DIY projects for my car, bike, and some home applications. Since I saw this a while ago on a project online I wanted to give a try. These are wonderful connectors with 4 different colors which will be enough for most of the projects you are doing.