... 21,221/2" x 1/2"12.7mm x 12.7mm16,17,18,19,20,21,22,235/8" x ... 5/8"16mm x 16mm18,19,20,21 ... "19.1mm x 19.1mm16,17,18,19,20,211" x 1/2"25.4mm x 12.7mm16,17,18,19, ... mm)1/2" x 1/2"12.7mm x 12.7mm16,17,18,19,20,213/4" x 3/4 ... "19mm x 19mm16,17,18,19,20,211 ... 1"25.4mm x 25.4mm15,16,17,18,19,20Technical Note: 1.Standard roll length: 30m;width ...