KWB 493900 Broca de fresar plana 20 mm haste sextavada para madeira

Drilling large, clean holes in wood often leads to splintering, wandering bits, and slow progress. The KWB 493900 spade drill bit solves these problems with a centering tip and pre-cutters that guide the bit and score the hole perimeter for a smooth finish.

Who is it for

This drill bit is ideal for carpenters, electricians, and DIYers who need fast, precise through-holes or blind holes in softwood, hardwood, and chipboard. It works with both cordless and electric drills.

Main features

• 20 mm cutting diameter for large holes
• Hexagonal shank (1/4 inch / 6.35 mm) prevents slipping in the chuck
• Two cutting edges and two pre-cutters for clean, splinter-free holes
• Centering tip for accurate positioning
• Made from carbon steel (CV-Stahl) with a bright, polished finish
• Complies with DIN 3126 E 6.3 for shank dimensions

Specifications

• Drill bit type: Spade drill bit
• Cutting diameter: 20 mm
• Total length: 152 mm
• Shank type: Hexagonal
• Shank size: 1/4 inch (6.35 mm)
• Material: Carbon steel (CV-Stahl)
• Application materials: Wood, softwood, hardwood, chipboard
• Number of cutting edges: 2
• Number of pre-cutters: 2
• Centering tip: Yes
• Tool compatibility: Cordless drills, electric drills
• Surface treatment: Bright / Polished
• Packaging quantity: 1 piece

Tips

For best results, drill at a moderate speed and let the bit do the work. Withdraw the bit occasionally to clear chips, especially in deep holes. Use a backing board to prevent tear-out on the exit side of through-holes.