Steel Dragon Tools WC2166 Electric Brick Concrete Wall Chaser, Cutter & Notcher For grooving solid or hollow brick as well as cinder block, cement sand brick. Specialized power tool used to easily cut narrow grooves in walls. Cutting Width: 0.98 in. (25 mm) with included blade. Maximum Cutting Width: 1.37 in. (35 mm) with purchase of optional blade. Package includes 0.98-inch (25 mm) blade, releasing wrenches, and carrying case.