Olfa Rotary Cutter Ergonomic 45mm Blade with Locking mechanism. The blade is reversible, making the cutter a true left or right hand product. The cutter will accept the pinking/wave/standard blades. Button can be used to lock cutter in closed position. Use this rotary cutter with a cutting mat and ruler to cut fabric, paper or anything precisely. This is an essential item for any quilter, sewist, crafter, DIY and more. The safety locking mechanism makes this sharp tool safe in a household where someone can accidently pick it up. In addition to a rotary cutter, you will also need a quality Olfa cutting mat and Omnigrip 6-Inch-by-24-Inch Non-Slip Quilter’s Ruler. The Olfa cutting mat grid comes as 18 x 24 inches and is self healing. The Omnigrip ruler is clear so you can see through the ruler for precise cutting needs.