The Bormax³ HM-equipped Forstner bit sets combine a carbide centering tip, carbide main blade and carbide-tipped serrated rim for clean, precise holes. Their hex shank delivers superior torque transfer for freehand or stationary use. Compatible with 1639 extensions for deep-hole drilling up to 120 mm. Supplied in a wooden case 📦 Sets Available 4-piece set: Ø 35, 40, 45, 50 mm 5-piece set: Ø 15, 20, 25, 30, 35 mm 6-piece set: Ø 15, 20, 25, 30, 35, 40 mm 7-piece set: Ø 15, 20, 25, 30, 35, 40, 50 mm 8-piece set: Ø 15, 20, 25, 30, 35, 40, 45, 50 mm ✨ Key Features Carbide-tipped Geometry – Centering tip, main cutter & serrated rim for minimal wander and tear-free edges Hexagonal Shank – 8 mm for Ø 15–20 mm bits; 10 mm for Ø 22–60 mm bits, ensuring slip-free power transfer Serrated Peripheral Rim – Grooved teeth reduce feed force, friction and heat Universal Material Compatibility – Freehand drilling in European & exotic hardwoods, MDF, coated/uncoated chipboard, acrylic, Corian®, GFK, HPL, polycarbonate, PVC, Trespa® Low Heat Buildup – Carbide edges and optimal flute design extend cutting life Deep-Hole Ready – Pair with FAMAG F1639 extensions for depths beyond 57 mm ⚙️ Technical Specs Diameter Range: 15 – 60 mm (inch sizes from ⅝″ to 2″) Cutting Length (NL): 57 mm Overall Length (GL): 90 mm Shank Diameter: 8 mm (Ø 15–20 mm) & 10 mm (Ø 22–60 mm) Material: Carbide-tipped HSS on alloyed tool steel core 🪵 Applications Precision hinge-cup and concealed hardware boring Dowels, pocket holes & countersinks in wood and composites Clean edge-to-edge holes in panels and solid timber Angle drilling in stair components and end grain 💡 Why Choose Bormax³ HM With its carbide-tipped cutting edges, serrated rim and robust hex shank, the Bormax³ HM Forstner bit delivers unmatched precision, faster cuts and extended tool life across wood, plastics and composites. Perfect for craftsmen demanding versatility and deep-hole performance.