CIRCLE ROTARY CUTTER OLFA - Perfect for cutting circles out in fabric. - The unique ratchet handle is simple and easy to use and greatly reduces wrist fatigue. - Designed for both right and left-handed users. - The circle cutter can be adjusted to cut circles from 1-1/2" to 8-3/4". - No stabilizer is required for use. - Simply determine the size of the circle required and set the cutter accordingly. - Fits OLFA's 18 mm (RB18-2) replacement blades.