Product features 2-in-1 heat shrink butt splice set, cost-effective choice - Come with 240Pcs heat shrink tubing and 120Pcs solder seal butt connectors Specific color for your different need - come with 5 Colors 2:1 8 Sizes heat shrink tubes and 4 colors for solder seal wire connectors Waterproof and insulated - can be used for auto, marine, and other low voltage repair project. Widely Use: suitable for electrical insulation, wire bundling, colour coding, mechanical protection, wire/cable joints and daily repairs etc.Specification:For the solder seal wire connectors:Shrinkage ratio: 2:1Temperature that start to shrink: 80Temperature that solder ring start to melt: 111CTemperature that solder ring melt completely:138CFor the heat shrink tubing:Shrinkage ratio: 2:1Start to Shrinkage Temp: 70 Full Shrinkage Temp: 125 Operate Temperature: -55 to + 125Tensile Strength: 10.4MpaDielectric Strength: 15KV / mmFlammability: Flame RetardantPackage includes:70PCS Solder Seal Wire Connectors:10 x White Connectors: Diameter 1.7 mm, able cross-section 0.25-0.34 mm(A.W.G.:26-24);20 x Red Connectors: Diameter 2.7 mm, Cable cross-section 0.5-1.0 mm(A.W.G.:22-18);25 x Blue Connectors: Diameter 4.5 mm, Cable cross-section 1.5-2.5 mm(A.W.G.:16-14);15 x Yellow Connectors: Diameter 6.0 mm, Cable cross-section 4.0-6.0 mm(A.W.G.:12-10).80PCS Heat Shrink Tubing:10pcs x 3.5mm x 40mm(Length) Green10pcs x 4.0mm x 40mm(Length) Black10pcs x 4.0mm x 40mm(Length) Red15pcs x 5.0mm x 40mm(Length) Blue15pcs x 6.0mm x 40mm(Length) Yellow10pcs x 7.0mm x 40mm(Length) Black10pcs x 10.0mm x 40mm(Length) Black10pcs x 13.0mm x 40mm(Length) Black