C.S. Osborne Mini Punch Set.
A special punch set for cutting small, precise holes in soft materials where throated or plier punches won't reach.
Set has a round handle with slot inside to clear punchings. Handle is threaded to accommodate the seven replaceable screw tube sizes shown.
Contains 1 each of sizes: 5/64" (Size 0), 3/32" (Size 1), 7/64" (Size 2), 1/8" (Size 3), 5/32" (Size 4), 11/64" (Size 5) & 3/16" (Size 6).