The Stanley 4-18-328 FatMax Brick Bolster Chisel with Guard has a modified parabolic striking end for greater resistance to mushrooming and chipping The Stanley 4-18-328 Fatmax Bolster Chisel or Brick Set has a bi-material handguard for increased comfort and protection from overstrike. The 100mm wide Chisel is forged from chrome vanadium steel, giving increased strength and it stays sharp longer. Features: Hardened, quenched and tempered to precise specifications for added safety Modified parabolic striking end for greater resistance to mushrooming and chipping Powder coat finish for increased visibility Stanley blade holds its edge longer so saves time re-sharpening Specification: Width of blade: 100mm Overall length: 212mm