For use on Nail Embedded Timber; Chipboard, Blockboard, Particle board, Laminated sheet.Heavy duty carbon steel construction for exceptional performance.Bevelled pilot-point reduces bit walk for faster drilling and clean holes.Impact ready hex shank with oversized shaft for greater strength and durability.Technical Specification:Product Type: Flat BitsDimensions: Length: 28mm x Height: 125mmWeight: 0.064KgWarranty: 19 months C.K products are guaranteed for 1year against imperfect materials or workmanship. Damage caused through normal wear and tear or resulting from inappropriate use, is not covered.