Bi-Metal Hole Saw

APPLICATION RANGE: Cutting metal, wood, plywood, fiberboard, gypsum board.
BALANCE: The product has precise concentricity, no sloshing when opening, and can open a flat hole.
MATERIAL: The cutter head adopts M42 and 8% cobalt alloy to enhance the hardness and be more durable.
POSITIONING: The pilot drill is made of H.H.S material for stable and accurate positioning of the object.
DESIGN: The closed-loop design with serrations from small to large increases the efficiency of hole opening.