[Large collection of electric wire]: 5 colors (black, yellow, blue, green, red), 12 specifications, 750pcs. [12 sizes heat shrink tubing] length: 45mm; diameter: 1mm/1.5mm/2mm/2.5mm/3mm/3.5mm/4mm/5mm/6mm/7mm/10mm/13mm. [Heat Shrinkage Ratio Fittings]: 2: 1. Excellent flame retardant and insulation performance. Soft and flexible, low shrinkage temperature, fast shrinkage, acid and alkali resistance, anti-aging. [Application]: Mainly used in wire connection, rust prevention and corrosion protection of solder joints, protection and insulation treatment of wire end, wiring harness and electronic components./ Specification: Material: Polyolefin PVC Shrink ratio: 2: 1 Flammability: Flame retardant Cutting method: Scissors or sharp knife Features: Flame retardant material,Safe and non-toxic,Excellent workmanship,Soft and flexible,Effective flame retardant,Excellent insulation,Fast shrinkage ,Low shrink temperature, shrink in seconds. Package Quantity: 1 set (750pcs)