This hole punch unit requires a red adapter base and an arbor press, sold separately. This tool fits the red adapter base that comes with the 4-in-1 Standard Radii Corner Rounder. Alternatively, the Xpert Tools Arbor Press features a build-in base.

Xpert Tools Large Radii Corner Rounder offers a 2-in-1 cutting unit with 1-1/2" and 1-7/8" radii. Rotate the die and set it in the red base to select your corner rounder radius. The cutting unit can handle 6mm ACM panel, aluminum up to 0.080" thick, magnetic sheeting, corrugated plastic, posterboard, and more..