Machine Chuck, Independent, Height 3.35 In., Dia. 10 In., Capacity Max. 9.84 In., Capacity Min. (In.) 0.59, Gripping Range External 0.59 - 9.84, Gripping Range Internal 2.87 - 9.84, For Use With Adapter Plate, Jaw Material Steel, Jaw Type Solid Reversible Jaws, Max. Bore 2.56 In., Number of Jaws 4, RPM 1500, Spindle Adaptor Required