Driving Unit Consisting Of Following Items 1. Spring Supporting Plate Material 40Crmo3 & 40-4 5 Hrc H&T. 2. ⁠Cap Drive Plate Material 40Ni6Cr4Mo3 & 40-45 Hrc Toughened. 3. ⁠Lock Nut Km-1 4. ⁠Spring A Nd Support Pins Material 40Crmo3 & 40-45 Hrc H&T [ Warranty Period: 30 Months After The Date Of Deliv Ery ] ]