These are some heat shrink tubing, which is made of and durable material, with good texture, practical for . Easy to install and use, it has good working performance, can be easily applied to your power supply, serve you longer and better. Features -Color:Black -Material:Polyolefin -Size:4.00X0.20X0.20cm/1.57X0.08X0.08in -Size:4.00X0.25X0.25cm/1.57X0.10X0.10in -Size:4.00X0.35X0.35cm/1.57X0.14X0.14in -Size:4.00X0.50X0.50cm/1.57X0.20X0.20in -Size:8.00X0.70X0.70cm/3.14X0.28X0.28in -Size:8.00X1.00X1.00cm/3.14X0.39X0.39in -Size:8.50X1.30X1.30cm/3.34X0.51X0.51in - It can be used for solder joint protection, group line marking, resistance and capacitance reason protection, etc. - Protect your cables as well as solder and plug connections from kinks, abrasion, etc. - It has the advantages of good electrical insulation, corrosion resistance, high temperature resistance and so on. - Made with , and insulated, these heat shrink tubing can be used for long time. - Features good working performance, different specifications can meet your various demands. Package list: 120 x heat sink tubes(2x40mm) heat sink tubes(2.5x40mm) 80 x heat sink tubes(3.5x40mm) 80 x heat sink tubes(5x40mm) 64 x heat sink tubes(7x80mm) 32 x heat sink tubes(10x80mm) 32 x heat sink tubes(13x85mm)