A patented €œgoof-proof€ tool which applies materials at a precise, uniform depth. Apply decorative concrete €œtoppings,€ self-leveling/high-performance floor coating materials, and underlayments. CAM® depth settings range from 1/32″ to 1-1/2″. Includes an aluminum frame with either a threaded handle adapter or a powder-coated aluminum handle. Choose your frame size and handle option and then choose your CAM® set. Frames and CAM® sets are sold separately. When one contact point wears down you simply loosen the wing nut and rotate the CAM® to a fresh contact point. We use a €œradial€ edge design which maintains uniform coating thickness even at varying handle angles and lengths.