Features 1、Nylon sleeve outsourcing, no tape, waterproof and electrical isolation, non‑flammable material, reliable and durable. 2、It shrinks by heat, the internal solidified glue melts, and the wiring is tight and waterproof. 3、With yellow, black, red, and green different colors and different size, can meet the needs of daily use. 4、It shrinks quickly at low temperature, lighter, heat gun can both make it shrink. 5、Has high strength and toughness, can be bent arbitrarily after heat shrinking. Specification Item Type: Heat Shrink Tubing Kit Material: Nylon Uses: Electronic Components, Circuit Wiring Harness, Wire Connection Repair, Data Line (Small Head) Repair, Household Goods Line Repair Heat Shrinkage Ratio: 2:1 Size and Quantity: 1 x 40mm/0.04 x 1.57in (Yellow, Black, Red, Green), 120pcs 2 x 40mm/0.08 x 1.57in (Yellow, Black, Red, Green), 60pcs 3 x 40mm/0.12 x 1.57in (Yellow, Black, Red, Green), 32pcs 4 x 40mm/0.16 x 1.57in (Yellow, Black, Red, Green), 32pcs 6 x 40mm/0.24 x 1.57in (Yellow, Black, Red, Green), 32pcs 8 x 80mm/0.31 x 3.15in (Yellow, Black, Red, Green), 20pcs 10 x 80mm/0.39 x 3.15in (Yellow, Black, Red, Green), 16pcs 14 x 80mm/0.55 x 3.15in (Yellow, Black, Red, Green), 16pcs Package List 328 x Heat Shrink Tubing