Rotatrim RC RCM18 18-Inch Cut Rotatrim Professional-18 Cutter …The Rotatrim Professional (Mastercut) range of rotary cutters are the ones by which all others are judged. Over 250,000 are in use worldwide; in schools, offices, studios and darkrooms, where their sturdy construction is rigorously tested, day in, day out. With cut lengths from 12" (305mm) to 54" (1374mm) each model features unique chromed steel twin guide rails, silent glide action and all metal cutting head and end frames "A4+" size indicators and