Kit include 24 studs four each in 3", 4", 5", 6", 7", and 8". Also included are 4 Coupling Nuts, 6 Flange Nuts, 6 T-Slot Nuts For Use With 5/8-11 Stud Size. With 1 T-Slot Cleaner, 6 Step Blocks and 6 Serrated End Clamps. All in one handy holder to never lose any of these pieces again. TE-CO is a leader in workholding technology, which includes clamping and set-up tools, tooling components, inspection and gaging for CMM applications, spring loaded devices, hoist rings, Toolex vise workholding systems, and tooling plates and columns.