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 Each Professional is screen-printed with a 10mm grid, "A" size indicators and two additional metric/inches scale bars A full range of accessories is available These smooth running "M" Series Professional Rotazry Trimmers are designed to withstand high volume applications and will handle virtually all flexible materials up to 3.0mm thickness (depending on model)