... "10.6mm x 10.6mm19,20,21,221/2" x 1/2"12.7mm x 12.7mm16,17,18,19 ... /2" x 1-1/2"38mm x 38mm14,15,16,17,18,191" x 2"25.4mm x 50.8mm14,15,162" x 2" ... 50.8mm x 50.8mm12,13,14,15,16Technical Note: ... 1.Standard roll length: 30m;width: 0.5m to 1.8m 2.Special sizes ... DiameterIn inchIn metric unit(mm)1/2" x 1/2"12.7mm x 12.7mm16,17,18,19, ...