The FAMAG 2170 Bi-Metal HSS carpentry hole saw features variable-pitch, cobalt-alloy high-speed steel teeth welded onto a rugged cylindrical steel body. Supplied with a changeable SW12 hex shank, it bores large-diameter holes in a single pass—perfect for flue, ventilation, and drainage installations. Designed for heavy-duty handheld drills, it effortlessly cuts insulation materials, wood-based panels, and drywall without additional guides.

🛠️ Key Features

• Variable-Pitch Bi-Metal Teeth: Smooth, chatter-free cutting

• HSS-Co Alloy: Outstanding wear resistance for extended life

• SW12 Hexagon Shank: Quick-change fit on standard drills

• Large Diameter Range: 85 mm to 200 mm sizes available

• Freehand Operation: No auxiliary guides needed with a robust drill

🔩 Applications

• Cutting holes in insulation (glass wool, stone wool, styrofoam)

• Drilling through plywood, chipboard, MDF, and gypsum-board

• Creating openings for exhaust/air-supply pipes and drainage in roof structures

⚙️ Specifications

• Shank Size: SW12 hexagon

• Gross Length (GL): 420 mm

• Net Length (NL): 300 mm

• Mounting: Changeable SW12 hex shank

🔧 Accessories

• Pilot Arbor with Drill Head (F2170030)

• Guide Pin Only (F2170010)

• Hexagon Shank Adapter (F2170005)

🚀 Benefits

• Time-Saving: One-pass hole cutting cuts setup time in half

• Versatile: Handles a wide range of insulation and panel materials

• Durable: Premium bi-metal construction for demanding jobs

• Precise: Variable tooth pitch delivers clean, accurate holes