8-1/4 Inch Hole Saw with Arbor, 210mm / 8.25 Inch M42 Bi-Metal Hole Cutter for Wood, Drywall, Plywood, Plastic, Cornhole Boards, Ceiling Speakers, Air Ducts and Thin Soft Metal

The JIECHENG 8-1/4 inch hole saw is designed for cutting large 8-1/4 inch / 210mm diameter holes in wood, drywall, plywood, plastic, plasterboard, gypsum board and other soft materials. It is a practical choice for cornhole boards, air duct openings, ceiling speaker cutouts, ventilation holes, ductwork projects and general DIY installation work. This hole saw is made with M42 bi-metal teeth for smoother cutting and improved durability when used correctly. The cutting depth is about 1.24 inch / 32mm. The included arbor mandrel helps keep the hole saw more stable during drilling, while the pilot drill bit helps guide the cut. Package Includes: 1 x 8-1/4 inch / 210mm bi-metal hole saw 1 x arbor mandrel with pilot drill bit and spring 1 x extra pilot drill bit 1 x hex wrench Use Tips: For large diameter hole saws, start drilling at low speed and keep the drill steady. Do not apply excessive pressure. Let the teeth cut gradually. Always wear safety glasses during operation. Material Notice: This hole saw is mainly designed for wood and soft materials. It can be used on thin soft metal sheet with proper speed and pressure, but it is not recommended for thick steel plate, stainless steel, hardened metal, concrete, tile, stone or masonry.

• 8-1/4 Inch Hole Saw – Cuts clean 8-1/4 inch / 210mm diameter holes with a cutting depth of about 1.24 inch / 32mm. Also suitable for buyers searching for an 8.25 inch hole saw. Ideal for large round openings in wood panels, drywall, plywood, plastic boards and similar soft materials.
• Wide Application – Designed for making large holes for cornhole boards, air ducts, ceiling speakers, ventilation openings, ductwork, light-duty DIY projects and interior decoration work. Works well on wood, plywood, drywall, plasterboard, gypsum board, plastic and thin soft metal sheet.
• M42 Bi-Metal Teeth – Made with high-speed steel bi-metal teeth for smoother cutting, better durability and reduced binding when used properly. The sharp tooth design helps create cleaner edges in wood, drywall and other soft materials.
• Complete Set Included – Package includes 1 piece 8-1/4 inch bi-metal hole saw, 1 arbor mandrel with pilot drill bit and spring, 1 extra pilot drill bit and 1 hex wrench. Ready for installation and replacement use.
• Use with 3/8 Inch or Larger Drill Chuck – The arbor has a 3/8 inch hex shank and fits most standard hand drills with 3/8 inch or 1/2 inch drill chucks. For large hole saws, start at low speed, keep the drill steady, avoid excessive pressure and wear safety glasses. Not recommended for thick steel plate, stainless steel, concrete, tile, stone or hardened metal.