1.6mm Heatshrink 2 colours ~ Red & Black - 1M Lengths 4.8mm Heatshrink 5 colours ~ Red, Black, Blue, Yellow & Clear - 1M Lengths 6.5mm Heatshrink 2 colours ~ Red & Black - 1M Lengths 9.5mm Heatshrink 3 colours ~ Yellow, Blue & Clear - 1M Lengths Heatshrink Heatshrink range from suitable for cables sizes from 1.6mm to 9.5mm in 4 colours and clear. Voltage rating of 600v Flammability rating of VW-1 Shrink ratio 2:1 Shrink temperature 70°C to 110°C Operating temperature -55°C to 125°C Material - Cross-Linked., thermally stabilized flame retardant polyolefin UL/CSA recognised (E307734) UL224, VW-1, C-UL CSA 22.2 OFT Technical Data Tensile Strength - 14.8 Mpa Elongation - 460% Tensile Strength after ageing - 14.5 Mpa Elongation after ageing - 480% Dielectric Strength - 17kV/mm Shrink Ratio 2:1 i.e. if you purchase 4.8mm heatshrink, unshrunk is 4.8mm internal reducing to 2.4mm when shrunk.