52 PC Clamping Kit 7/16" T-Slot Stub End Clamp Flange Coupling Step Block 52 PC Clamping Kit T-Slot Size: 7/16" ; Stud Size: 3/8"-16 Set Contains:6 T-Slot Nuts ; 6 Flange Nuts ; 4 Coupling Nuts ; 6 Step Blocks 6 Serrated End Clamps ; 24 Studs(4 of each): 3" 4", 5", 6", 7" and 8" Quantity: 1 ; Overall Storage Dimension: 12-1/4" x 3" x 8-1/4"