Choose our quality products and enjoy your wonderful life,It's our pleasure to serve you. Product Item:150 Pcs 2216 1614 1210 AWG #10 Heat Shrink Fork Connector Terminals, Insulated Crimp Connector Product package include: 50 pcs 2216 AWG(Red), 50pcs 1614 AWG(Blue), 50pcs 1210 AWG(Yellow) Material: Copper + ABS Plastic Suitable wire: 0.51.5mm²/2216 AWG/ Max Current 19A (Red), 1.52.5mm²/1614 AWG/ Max Current 27A (Blue), 46mm²/1210 AWG/ Max Current 45A (Yellew) HOW TO USE ·Step 1: Gently Insert stripped wire into the connector ·Step 2: Crimp the connector with a professional tool ·Step 3: Apply heat evenly with a hot melt professional tool until the tube shrinks and the adhesive flows ·Step 4: Inspect your waterproof quality connection. About temperature Minimum shrink temperature: 176DegreeF / 80DegreeC Full recovery temperature: 266DegreeF / 130DegreeC Operating temperature: from 67DegreeF to 257DegreeF or 55DegreeC to 125DegreeC Supporting ServicesWe not only provide you with quality products, but also provide you with better after s services. If you have any concerns, please feel free to contact us, thank you.