General description Manufactured from chrome vanadium steel, the Sitesafe 4" x 9" Contractor Brick Bolster is designed for splitting bricks. This bolster chisel is available in two sizes and can be purchased with or without a hand guard, providing flexibility based on user preference. Technical specifications Blade Material: Chrome Vanadium Steel Blade Width: 100mm Handle Material: Plastic/Steel MFR Part No.: 5051330K Octagon: 22mm Overall Length: 230mm Product Type: Bolster Chisel Shank Shape: Octagonal Other information