Specifications: Color: white, red, yellow, blue Installation style: heat shrink Minimum shrinking temperature: 80 (180F) Minimum soldering temperature: 138 (300) Package includes: 150 heat shrink terminals (one box) Instructions: Strip wire insulation 1/3 inch (about 0.3 cm) at both ends. Insert solder sleeve and string the wires together. Rotate the connector continuously while using a heat gun, applying heat evenly around the solder until it flows into the wire. Then apply heat to both ends of the tube until the adhesive flows and seals the wire. Remove heat and let it cool before use.