Dainisho Plasterboard Cutting Bit [Unused]

This is a 6.35mm hex shank drywall cutout bit from Dainichi Sho. It can be used with your impact driver. The model number is SK-6.
It can cleanly cut through the paper layer as well. It drops fine debris inside the wall. It is also compatible with double-layer installations. Materials that can be cut include drywall, decorative drywall, lath board, calcium silicate board, and more.
It is unused.