Features: 3 options: R1 is suitable for thick and thin sidebands, with thicknesses ranging from 0.8mm to 2.0mm; R2 is suitable for thick sidebands, with thicknesses ranging from 1.5mm to 2.0mm; R3 is suitable for chamfering solid wood boards. Aluminum alloy body, tungsten steel blade, CNC processing, well made and sturdy. Brand new and high quality Replaceable tungsten steel blade, high hardness, sharp blade, long service life. The size of this edge trimmer is portable and easy to carry. This flat surface is used for chamfering or deburring strips to give the paper a smooth curved edge. Specifications: Material: stainless steel Model: Chamfer, convenient edge trimming(optional) Package Includes: 1Set x Trimming knife note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!