Stanley fatmax floor chisel 75mm with guard stanley 4 18 331 used by carpenters electricians and plumbers for lifting floorboards or channelling recesses in solid floors the chisel is forged from chrome vanadium steel for increased strength and durability blade holds its edge longer and therefore needs less sharpening hardened quenched and tempered to precise specifications for added safety modified parabolic striking end for greater resistance to mushrooming and chipping li bi material