PENSON & CO. 5/8" T-Slot Clamp Kit 58 pcs 1/2"-13 Stud Hold Down Clamping Set Upgraded for Bridgeport Mill Clamp a wide range of workpieces securely to the table while machining, milling or drilling Made of high grade steel and all the blocks, bolts, nuts and hold-downs are case hardened. Racks can be bolted to the wall or side of machine for easy access. Best among mini clamps press tool sets This machine clamping kit provides a variety of add-ons to fully utilize Central Machinery's two speed variable bench mill/drill machine Include a variety of flange nuts, tee nuts, step blocks, coupling nuts, studs and hold down bars to fit almost any machine clamping need.