CLOSEOUT HAND TOOL: 5 PIECE MOUNTED STONE SET 1/4 INCH SHANKS. 5 piece stone rotary grinding bits with 1/4 inch shank. Ideal for grinding, polishing, carving, cleaning and de-burring. Set includes: • Cone, small tree, large tree, wheel and ball. • Three grit types: fine, medium, and coarse. • Maximum 12,000 RPM. • Bonded Aluminum Oxide Construction. Wholesale, 80 per unit.