BN 185mm Carbide Tip Replacement Saw Blade for BNCE 50 HUCQ Heavy Concealed Flange Face Mount Joist Hanger with SDS Engineered for strength and reliability Engineered for strength and reliability the undercutting thread design efficiently transfers load to the concrete or masonry base material reducing the number of specialized tools needed on site True cutting action rather than friction melting the blade geometry physically cuts through metal rod burr free cuts through rebar and a wide range of metal materials making it the go to replacement blade for contractors and construction crews who rely on their BNCE 50 cutting edge saw day in and day out