Kapro's Shark Mason's Level features PATENTED strike pads that absorb the shock of repeated trowel blows used to level out block and mortar. Also, the PATENTED Plumb Site Dual-View vial will provide an easy and accurate vertical leveling. In 2008 the Kapro Shark was accredited as "the tool that made the winning difference" in a Rialto California Fastest Trowel competition. The heavy-duty cast aluminum is sprayed with an electrostatic powder and then baked with a durable epoxy polyester paint to resist the harsh mortars used in the wet cement trades. Make sure to spray down your level after every use to eliminate a buildup of mortar.