Sharp Chucks & Machines Ltd offers Four Jaw Independent Chuck. Sharp Chucks & Machines Ltd is an ISO 9001: 2000 accredited company supplying a wide range of Lathe Chuck & Machine Tool Accessories for various industrial applications. The Four Jaw Independent Chuck is available with Solid Reversible Jaws, Chuck Operating Key and Mounting Bolts in different sizes and specifications. The Four Jaw Independent Chuck comes in diverse material constructions such as C.I, S.G and steel.