Sharp and Durable: Rotary blade is made from high quality of SKS-7/SUS420J2 with is super sharp and long-lasting. Effortlessly without loose edges and threads. No strings are left behind, as it cuts clean and fast Ergonomic 45mm Rotary Cutter: Ergonomically designed handle with soft-grip for comfort on both sides. Anti-Slide & to Reduce Joint Fatigue.The blades can also be installed on both sides of the rotary cutter, perfect for both right- and left-handed users Designed with Safety Button: This handy rotary cutter is designed with a safety button to lock the blade.Once the safety locking button is set, the trigger handle cannot be used.Even a kid can use it safely under the supervision of his/her parents Save Your Time: This 45mm rotary cutter is suitable for cutting all kinds of fabrics, paper, leather, scrapbooking, quilting and for all types of arts & crafts. It is more reliable and convenient than a pair of scissors while saves you so much time Specifications: Host material: ABS+PVC Blade material: SKS-7/SUS420J2 Blade size: 45mm in diameter Host size: about 5.5*17cm Notes: 1. The blade is sharp, please use it carefully and do not put it in a place where children can reach. 2. Be sure to put away the blade head when not in use, and open it when in use. 3. If it is not used for a long time after opening, you can drip some engine oil on the blade head for maintenance to extend its service life. 4. The blade on the rotary cutter is a consumable, and its life span varies due to personal usage habits and different cutting pads. 5. The dotted blade and the wavy blade are also suitable for installation on the roller knife. The blade is replaceable and the handle is reusable.