[Features] ● With a set of 2 blades leading the inner blade, it is possible to drill composite materials such as metal-covered siding materials, stainless steel-covered wood, and (metal + insulation + plywood) in one shot. ●When drilling wood materials, it is possible to cut nails and layered cuts of thin iron plates because chips are easily discharged.
[Use] ●Cover materials: metal siding boards, 2x4 (nails are also cut), wood, plywood, PVC board, FRP, etc.