... "10.6mm x 10.6mm19,20,21,221/2" x 1/2"12.7mm x 12.7mm16,17,18,19, ... 12.7mm16,17,18,19,20,211-1/2" x 1-1/2"38mm x 38mm14,15,16,17,18,191" x ... 2"25.4mm x 50.8mm14,15,162" x 2"50. ... roll length: 30m;width: 0.5m to 1.8m 2.Special sizes available at request 3.Packing: in waterproof paper ... DiameterIn inchIn metric unit(mm)1/2" x 1/2"12.7mm x 12.7mm16,17,18,19, ...