Master Single Stepped Hard Jaws 12" MHS-12-21 1.5x60 deg. serrations (0.83 in. groove)

Master Stepped Hard Top Jaws 12" Stepped 1.5mm x 60° Standard  serration Material: SNCM 21 Steel   Hardened to HRC 58-60 Dimensions : refer to Fig 2 Illustration attached Nominal Chuck Size : 12 in H-1 : 103 mm (4.06 in) H-2 : 50 mm (1.97 in) H-3 : 52 mm (2.05 in) H-4 : 21 mm (0.83 in) Groove Width H-5 : 5 mm (0.20 in) H-6 : 62 mm (2.44 in) H-7 : 30 mm (1.18 in) H-8 : 41 mm (1.61 in) H-9 : 17 mm (0.67 in) H-10 : M16 Serration Pitch : 1.5 x 60 Weight : 3.90 kg (8.60 lbs) Ref Drawing : Fig. 2