Technical Specification Item Lathe Jaw Hard or Soft Soft For Use With 8 Chucks Overall Length 4 Overall Height 3 Overall Width 1-1/2 Distance Between Mount Hole Centers 63/64 Groove Width 0.551 Jaw Face Type Pointed Jaw Interface Type Serrated Material Grade - Machining 1018 Number of Jaws 3 Compliance and Restrictions This listing is for pkg. of 3.