[Interchangeable]: The 45 mm rotary cutter blades are interchangeable. Each group of tools includes 2 additional spare blades. [Security]: Your security is our absolute priority. This practical rotary knife is equipped with a safety knob to lock the blade. Even children can safely use it under the supervision of their parents [precise]: The 45 mm blade is steel SKS-7, sharp and almost not blunt. Using various spare blades, you can accurately cut several layers of fabric, paper or other materials. [SIMPLE]: This 45 mm rotary cutter is very easy to use. The non-slip handle is ergonomiy designed to reduce the fatigue of the joints. The safety button also facilitates the replacement of the blade. [General]: The round knife can be installed on both sides of the rotary knife, which makes it very suitable for the left and right hands. This will help you cut with precision several layers of fabric, paper, vinyl, leather, etc. The ideal tool for cutting paper, fabric, leather, plastic, fabric, etc. Suitable for cutting at home, at the office, at school, in store, etc. The 45 mm rotary cut kit is a practical cutting tool that can help you cut safely and accurately. Each group has 2 replacement blades, so that a variety of options are provided. The blade is steel SKS-7, sharp and never boring. The paper cutter has a security button to lock the blade and cut safely. Its easy to use the cutter and change the blade. The round knife can be installed on both sides of the rotary knife. This makes it very suitable for use by left-handed. You can use it to cut layers of fabric, paper, vinyl, leather and more equipped with a safety button ergonomiy designed to avoid slipping and reduce fatigue Suitable for left and right hands very suitable for cutting multilayer fabric, paper, felt, vinyl, etc. The security button can lock the blade Press the button to unlock the blade. Press the handle to release the blade. After cutting, press the button again to lock the blade. Technical indicators Material: steel SKS-7 Dimensions: rotary cutter: width: 6.35 cm; length: 16.5 cm Blade diameter: 4.6 cm places of application: home, office, school, factory, etc. including: 1 rotary knife of 45 mm 2 spare blades Usage tips: 1. The knife is sharp, use it with care and do not place it within the reach of children. 2. Make sure to store the cutting head when not in use and open it when used. 3. If you do not use it for a long time after opening, you can deposit oil on the cutting head for maintenance, which can extend the life. 4. The blades are consumables and their life varies according to personal use habits and cutting mats. 5. The dotted blade and wavy blade are also suitable for installation on the roll-cutter, the blade can be replaced and the same handle can be reused. Please allow a slight deviation in the measurement data and make sure it does not bother you before ordering.