... " 6.4mm x 6.4mm 22,23,24 3/8" x 3/8" 10.6mm x 10.6mm 19,20,21,22 1/2" x 1/2" 12 ... .7mm x 12.7mm 16,17 ... ,18,19,20,21,22,23 ... -1/2" x 1-1/2" 38mm x 38mm 14,15,16,17,18,19 1" x 2" 25.4mm x 50.8mm 14,15 ... ,16 2" x 2" 50.8mm x 50.8mm 12,13,14,15 ...