DEDRA H1239 Bi-Metal Hole Saw 39 mm – HSS Cutting Edge for Wood, Metal & Plastics

For professionals who demand clean, accurate holes without the frustration of wandering bits or jagged edges, the DEDRA H1239 hole saw delivers a 39 mm cutting diameter with a bi-metal construction that outlasts standard carbon steel saws. Its high-speed steel tooth tips are welded to a flexible alloy steel body, giving you the hardness to cut through tough materials and the resilience to survive occasional binding or misalignment. Whether you're installing pipework, running cables, or fitting locks, this saw produces smooth, round openings in wood, plywood, MDF, plasterboard, plastics, non-ferrous metals, and even thin-gauge steel or stainless steel.

Highlights

• Bi-metal blade: HSS teeth fused to alloy steel body for extended life and resistance to breakage.
• 39 mm cutting diameter – ideal for standard conduit, pipe, and lock installations.
• 38 mm cutting depth handles most sheet materials and timber sections in a single pass.
• Variable pitch tooth design reduces vibration and clogging for faster, cleaner cuts.
• Threaded base fits DEDRA arbors H1200, H1201, H1202 (sold separately) and many standard arbors.
• Compatible with both corded and cordless drills – use at low to medium speed with cutting oil on metal.

In daily use

The DEDRA H1239 excels in repetitive tasks where consistency matters. Its bi-metal teeth stay sharp longer than conventional hole saws, so you spend less time swapping blades and more time completing the job. The variable pitch geometry helps evacuate chips efficiently, preventing heat buildup and extending tool life. When cutting metal, apply a few drops of cutting fluid and reduce drill speed; for wood and plastics, a steady moderate speed yields a clean entry and exit with minimal tear-out. The threaded connection ensures a secure fit on the arbor, eliminating wobble and ensuring concentric holes every time.

Full specifications

• Brand: DEDRA
• Model: H1239
• MPN: H1239
• EAN: 5902628812421
• Product type: Hole saw
• Saw type: Bi-metal
• Cutting diameter: 39 mm
• Cutting depth: 38 mm
• Blade material: High-speed steel (HSS) bi-metal
• Body material: Alloy steel
• Tooth design: Variable pitch
• Recommended materials: Wood, plywood, MDF, plastics, plasterboard, non-ferrous metals, steel, stainless steel (thin gauge)
• Arbor compatibility: Requires separate arbor (e.g., DEDRA H1200, H1201, H1202)
• Drill compatibility: Corded and cordless drills
• Shank connection type: Threaded (to arbor)
• Application: Hole cutting for plumbing, electrical, construction, and general fabrication

Final note

Pair the DEDRA H1239 with a quality arbor and pilot drill, and you have a reliable hole-cutting solution that handles everything from softwood to stainless steel. Its bi-metal construction is a smart investment for tradespeople who value longevity and precision.