... (BWG)inchmm1/4" x 1/4"6.4 x 6.422,23,243/8" x 3/8"10.6 x 10.619,20,21,221/2" x 1/2"12 ... .7 x 12.716,17 ... ,18,19,20,21,22,235/8" x ... 5/8"16 x 1618,19,20,21,3/4" x 3/4"19.1 x 19.116,17,18 ... ,15,16,17,18,191" x 2"25.4 x 50.814,15,162" x 2"50.8 x 50.812,13,14,15 ...