Hole saw Dedra H1222 — diameter 82 mm, for stone and concrete, 1 piece

The Dedra H1222 hole saw with an 82 mm diameter is made for cutting precise circular openings in hard materials such as stone and concrete. Supplied as a single unit, this hole saw is intended for use with rotary drills where appropriate arbors or adapters are fitted. It is suitable for creating openings for pipes, conduits, anchors and through-wall installations during masonry or concrete work. The design focuses on efficient material removal and stable cutting performance on dense substrates.

Advantages

This 82 mm hole saw is built to withstand the abrasion and load of cutting stone and concrete, offering a balance of cutting speed and durability. Its geometry and cutting edge provide consistent hole dimensions and reduced chipping around the cut perimeter. Delivered as one piece, it is simple to mount and replace in standard drill setups when used with the correct arbor. The tool reduces the need for larger core-drilling equipment for medium-diameter openings in structural materials.

Suitable for

• Drilling pipe and conduit entries in masonry and concrete walls
• Creating holes for anchor bolts and fasteners
• Installing ventilation or electrical pass-throughs
• Small to medium renovation and construction tasks requiring circular openings in hard substrates

Key specifications

• Cutting diameter: 82 mm
• Intended materials: stone and concrete
• Quantity: 1 piece
• Compatibility: designed for use with rotary drills and compatible arbors/adapters
• Application type: through-holes for pipes, conduits and anchors in masonry work

How to use

Fit the hole saw to a compatible arbor or adapter and secure it in the chuck of a rotary drill rated for use with dense materials. Mark the center of the intended opening, position the pilot or guide if available, and start cutting at low speed to establish the initial groove. Increase drill speed and apply steady, even pressure while allowing the tool to do the cutting; avoid excessive force which can cause overheating or premature wear. Periodically withdraw the saw to clear debris and, where applicable, use water cooling or intermittent drilling to reduce heat when cutting concrete or dense stone. After cutting, remove the core and clean the hole edges as needed.

Usage recommendations

Always use appropriate personal protective equipment such as safety glasses, dust mask or respirator, and hearing protection. For best performance and tool life, match drill speed and feed pressure to the material density, and use water cooling or vacuum dust extraction when working with reinforced or heavily abrasive concrete.