100Pcs Heat Shrink Terminals Butt Connectors Kit Waterproof Electrical Wire Crimp BHT Series Item Type: Heat Shrink Terminals Material: Nylon, copper Purpose: These connectors can be used for wiring projects of your car, boat, home, trailer, RV or motorcycle Model Color Upper limit of current Wire range Size（approx.） AWG mm² L D d BHT5.5 Yellow 48A 12-10 4-6 42mm / 1.7in 6.93mm / 0.27in 3.6mm / 0.14in BHT2 Blue 27A 16-14 1.5-2.5 37.3mm / 1.5in 5.67mm / 0.22in 2.4mm / 0.09in BHT1.25 Red 19A 22-16 0.5-1.5 37.3mm / 1.6in 4.75mm / 0.19in 1.7mm / 0.07in BHT0.5 Yellow 9A 20-22 0.3-0.5 26.5mm / 1in 3.3mm / 0.1in 1mm / 0.04in Operating Temperature: -55℃-125℃ Start Shrinking Temperature: 80℃ Full Shrinkage Temperature: 130℃How e:  1. Strip about 10mm of the wire sheath 2. Insert the wire into the terminal 3. Clamp it with pliers 4. Heat and shrink the heat shrinkable tube