... Spring, TEL: +8613512873247, NoItemDescription1Bearing Bar25x3, 25x4, 25x4.5, 25x5, 30x3, 30x4, 30x4.5, 30x5, 32x5, 40x5, 50x5, 65x5, 75x6, 75x10--- ... 8'', 1 1/2''x1/8'' etc 2Bearing Bar Pitch12.5, 15, 20, 23.85, 25, 30, 30.16, ... 30.3, 32.5, 34.3, 35, 38.1, 40, 41.25, 60, ... 3Twisted Cross Bar Pitch38.1, 50, 60, 76, 80, 100, 101.6, 120mm, 2'' & 4'' etc 4Material GradeASTM A36, A1011 ...