Grizzly G1076 Clamping Kit for 5/8-Inch T-Slots, 58-Piece Our clamping kits are among the best in the world. all the blocks bolts nuts and hold-downs are case hardened each clamping kit includes: (24) studs Each clamping kit includes: (24) studs (6) step block pairs (6) t-nuts (6) flange nuts (4) coupling nuts and (6) end hold-downs The model g1076 set fits 5/8-Inch t-slots and includes 1/2-Inch studs