... x 1/2"12.7mm x 12.7mm16,17,18,19,20,21,22,235/8" x 5/8"16mm ... x 3/4"19.1mm x 19.1mm16,17,18,19,20,211" x 1/2"25.4mm x 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 ... 4"19mm x 19mm16,17,18,19,20,211" x 1"25.4mm x 25.4mm15,16,17,18,19,202" x 2 ... "50.8mm x 50.8mm15,16,17,18 ...