The Fein one of a kind SuperCut caulking cutter will remove caulking,sealant, and glazing putty quickly and cleanly. At 22,000 strokes per minute with a 4 degree angle, the heavy duty Fein SuperCut oscillates, doing all the work for you. All you have to do is guide the caulking cutter. Fein SuperCut blades fit easily onto a twelve-position-splined shaft for efficient power transmission and exact positioning.