Description: 50pcs Solder Seal Heat Shrink Butt Wire Connector Terminals Copper An easy one step connection of wires, soldered, insulated and sealed Can be ideal use in marine and automobile applications Polyolefin tubing in outside and hot melt adhesive in inside Solder and seal and with advanced waterproof function Polyolefin heat shrink butt connectors improved pullout strength, provides seal, strain relief, cable check, and insulation 22 x Red Shrink Connectors: Diameter 3.0 mm, Cable cross-section 0.5-1.0mm2 22-18AWG 13 x Blue Shrink Connectors: Diameter 5.0mm, Cable cross-section 1.5-2.5mm2 16-14AWG 10 x White Shrink Connectors: Diameter 1.5 mm, Cable cross-section 0.25-0.34mm2 26-24AWG 5 x Yellow Shrink Connectors: Diameter 6.0 mm, Cable cross-section 4.0-6.0mm2 12-10AWG Insulation:PE Plating:Tin Terminal Body:Copper Color:Red, Blue, White, Yellow Specifications: An easy one step connection of wires, soldered, insulated and sealed Can be ideal use in marine and automobile applications Polyolefin tubing in outside and hot melt adhesive in inside Solder and seal and with advanced waterproof function Polyolefin heat shrink butt connectors improved pullout strength, provides seal, strain relief, cable check, and insulation Package Included: 1x 50pcs (Four Sizes) heat shrink connectors 1x Storage Box Notes: Due to the difference between different monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.