... Material: C50, C67, 1075 3) Usage: shutter spring, band saw, saw, tools Features of steel strip:1) Used for producing various products, such ... as saw, automobile clutch, clockwork,spring, band saw, darby, ... smoothness3) Various steel grades: (0.18-2.5) x (20-270)4) Material: C50, C67, 60Si2Mn, T8A, T10A NO.33---Steel Strip