[Sharp and durable blades] The rotary cutter for fabric comes with 45mm blades made of high-speed steel (SKS-7) that can cut through multiple layers of fabric with ease. [Rotary cutter Ergonomic] Clench handle, easier to use, reduces hand fatigue! It can go for left or right handed, switch the blade from one side to the other easily to suit a lefty [Great safety feature] The blade automatically retracts when you let go of this handle. This rotary cutter has a lock button that you can use to either keep the tool shut or open. Push button easily locks the blade when not in use, can also lock the blade in place allowing for easy comfort cutting [Versatile tool] The rotary cutter can be used on various materials such as paper, leather and vinyl, in addition to fabric, making it a versatile tool for all your crafting needs [Must-have] Whether you're a professional tailor or a beginner sewer, having a reliable rotary cutter is essential. This sewing cutter is perfect for every project, big or small Specifications: Product material: plastic + SKS-7 alloy Size: about 5.5*17cm (main body) 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.