Erie Tools 24 Piece Clamping Kit For Small Milling Machines With .305" (7.75 mm) Table SlotsErie Tools 24-piece clamp set for milling machines. Clamp set includes two (2) sets of hold downs, two (2) sets of step blocks, four (4) threaded studs, four (4) T-nuts, four (4) barrel connectors, four (4) flange nuts. For mills with .305 in. (7.75 mm) table slots. Will fit the Erie Tools ETD-SM-MILL variable-speed, benchtop milling machine. Package Includes: Two (2) 4.5 in. hold downs Two (2) 2.5 in. hold downs Two (2) 1-1/8 in. step blocks Two (2) 1-1/2 in. step blocks Two (2) 4 in. threaded studs Two (2) 3 in. threaded studs Four (4) T-Nuts Four (4) barrel connectors Four (4) flange nuts