Features: brand new high quality Made of high-quality materials for durability Fast, efficient, -step wiring No crimping required Polyolefin tube on the outside, hot melt glue on the inside Transparent heat-shrinkable sleeves allow for precise visual inspection greater pulling force Fully waterproof sealed to prevent corrosion Ideal for marine, automotive, motorcycle and other outdoor applications. Product parameters: Quantity: 50pcs, 250pcs, 400pcs, 500pcs, 600pcs, 700pcs, 800pcs (optional) Insulation: PE Plating: Tin Terminal Body: Tin Ring Color: red, blue, white, yellow, black Type and size: White shrink connector: 1.5 mm diameter, cable cross section 0.25-0.34mm² Red shrink connector: 2.7 mm diameter, cable cross section 0.5-1.0 mm² Blue shrink connector: 4.5 mm diameter, cable cross section 1.5-2.5 mm² Yellow shrink connector: diameter 6.0 mm, cable cross-section 4.0-6.0 mm² Heat shrink tubing: Material: Polyethylene Colour: Black Package includes: (optional) Listing 1: 50 * Heat Shrink Solder Socket Kit Listing 2: 250 * Heat Shrink Solder Socket Kit Listing 3: 400 * Heat Shrink Solder Socket Kit Listing 4: 500 * Heat Shrink Solder Socket Kit Listing 5: 600 * Heat Shrink Solder Socket Kit Listing 6: 700 * Heat Shrink Solder Socket Kit Listing 7: 800 * Heat Shrink Solder Socket Kit Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data. Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. If you have any questions, please feel free to contact us, we will solve it for you. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. 50/800Pcs Solder Seal Sleeve Heat Shrink Wire Connectors Terminals Waterproof.