... ''x3/16'', 1''x1/4'', 1 1/4''x1/4'', 1 1/2''x1/4'', 1''x1/8'', 1 1/4''x1/8'', 1 1/2''x1 ... /8'' etc2Bearing Bar Pitch12.5, 15 ... -w-4, 11-w-4, 19-w-2, 15-w-2 etc. 3Twisted Cross Bar Pitch38.1, 50, 60, 76, 80, 100, 101 ... .6, 120mm, 2'' & 4'' etc 4Material GradeASTM A36, A1011, A569, Q235 ...