150PCs Solder Sleeve Insulation Wire Terminal Welding Tool Seal Part Waterproof Heat Shrink Item Type: Solder connector Minimum Temperature of Solder Melting: 138℃ Minimum Retraction Temperature: 80℃ Working Temperature: -55-125℃ Retraction Temperature: > 160℃ Complies with: ROHS, ISO 9001:2008, SGS and CE standards. Size: White Solder Connector Diameter: Approx. 1.7mm / 0.07in Conductor Cross Section: 0.25-0.34mm² (AWG: 26-24) Blue Solder Connector Diameter: Approx. 4.5mm / 0.18in Conductor Cross Section: 1.5-2.5mm² (AWG: 16-14) Red Solder Connector Diameter: Approx. 2.7mm / 0.11in Conductor Cross Section: 0.5-1.0mm² (AWG: 22-18) Yellow Solder Connector Diameter: Approx. 6mm / 0.2in Conductor Cross Section: 4.0-6.0mm² (AWG: 12-10)