The OX-P031101 Pro Brick Jointer 12in x 58in high quality steel for a heavy duty design and a professional finish to joints Brick jointers are designed to imprint grooves into mortar joints just after they have been filled this improves the lifespan and looks of the mortar The OX pro brick jointers have their sizes engraved into the back for easily knowing which to use Key Features One piece high quality steel Sizes clearly engraved onto tool Heavy duty design Specification Material - steel