This portable arc trimmer is made of durable aluminum alloy and has 4 types of blade options (R1, R2, R3, R1&R2) for an easy and practical burr removal process. Suitable for edges strips thickness from 0.8-2.0mm, as well as wooden boards chamfer. No additional tools needed, making it a must-have for any toolbox. Features 1. Portable Size: This arc trimmer with the portable size and easy to carry, you can put this tool in your tool bags easily. 2. Easy to Operate: With this tool, you can finish the burr removing quickly, no other tools needed. 3. Practical Deburring Tool: This arc trimmer is used to remove the burrs from the wood seal strips. 4. Material: This tool is made of aluminum alloy material and can supply a long service time, you do not need to change it often. 5. 4 Types Optional: There are 4 different types for you to choose: The R-1 type is suitable for thick or thin edges strips, suitable for edges strips thickness of 0.8-2.0mm, R-2 type is suitable for the thicker edges strips, suitable for edges strips thickness of 1.5-2.0mm, R-3 type is suitable for wooden boards chamfer. The fourth type contains one R-1 and one R-2. Specification Material: Aluminum alloy Color: Black Size: 4 x 4 x 11 cm Weight: 85 g, 100 g Type: R1, R2, R3, R1&R2 Package Include: 1 R1 / R2 / R3 Manual Arc Trimmer or 1 R1 Manual Arc Trimmer + 1 R2 Manual Arc Trimmer