Description: One easy step to connection of wires, soldered, insulated and sealed. Excellent waterproof sealing and protection from mechanical damage combined with anti-corrosion effect. Polyolefin tubing in outside and hot melt adhesive in inside Polyolefin heat shrink butt connectors improved pullout strength, provides seal, strain relief, cable check, and insulation. Widely use in marine and automobile applications, solder and seal and with advanced waterproof function. Specification: Material : Tinned Copper Color : Red, Blue, White, Yellow Style: Red: 22-18AWG(0.5-0.1mm), diameter 2.7mm White: 26-24AWG(0.25-0.34mm), diameter 1.7 mm Yellow: 10-6AWG(4.0-6.0mm), diameter 6.0 mm Blue: 16-14AWG(1.5-2.5mm), diameter 4.5mm Quantity: 50pcs Solder start melting temperature: 125? Solder complete melting temperature: 150? Completely shrink temperature: 130? Working temperature: -55? to 125? Package Includes: 12 Pieces Blue 23 Pieces Red 10 Pieces White 5 Pieces Yellow Note: Please allow 1-3mm error due to manual measurement, make sure that you do not mind before you bid. Due to the different monitor and light effect, the actual color may be slightly different from the picture color