The OLFA CMP-1 compass circle cutter is a pivoting tool for making circles in paper, film, acetates, cardboard, and light wood for crafts, signs, and model making. It cuts circles up to 6 in (152 mm) diameter and includes six COB-1 blades stored in the handle so spares are close at hand. Use it on an appropriate cutting surface to keep edges neat and to help preserve blade sharpness during repeated cuts.