Whether you are working on your boat, vehicle, home or scientific project, our crimp solder and seal connectors will ensure smooth soldering, increased current and weatherproof connections every timeCharacteristics:● Shrink Ratio 3: 1● A Simple One-Step Wire Connections.● Easy Identification: color-coded connector tubing.● Polyolefin heat shrink butt connectors enhance Pullout Strength.● High-quality wire connectors in Sealing, Strain Relief, Cable Checking and Insulation.● Molten Solder ensures wires are Highly Connected and prevents wires from slipping out of the terminal.Solder Sleeves:Quantity and Size:50 PCS x SST1 White: Diameter 1.5 mm, Cable cross-section 0.25-0.34mm² 26-24AWG70 PCS x SST2 Red : Diameter 3.0 mm, Cable cross-section 0.5-1.0mm² 22-18AWG60 PCS x SST3 Blue : Diameter 5.0mm, Cable cross-section 1.5-2.5mm² 16-14AWG20 PCS x SST4 Yellow: Diameter 6.0 mm, Cable cross-section 4.0-6.0mm² 12-10AW 600 PCS x Black Heat Shrink Sleeve (3.2mm, 20mm Long) 600pcs 1.5-2.5mm² 18-12AWG Heat Shrink Tubes:Quantity: 800PCSMaterial: PolyethyleneColor: BlackPackage Included:800PCS Heat Shrink Wire Connectors Note:Please allow 1-5mm errors due to manual measurement.Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.