Features: Brand new and high quality material,durable. Use P80 particle polymer abrasive (abrasive nylon) to pile brush cup shaped metal shells and improve wear resistance. It is used for deep grinding, peeling, and removing old peeling coatings from trees. This design is best suited for handling vertical surfaces log walls, regular and glued beams-, circles, and planarsurfaces. Good crawls into the joints of the walls. Specifications: Material: Grinding wire, metal shell- Size: Outer diameter: approx100mm/3.94in Screw hole: M14 Particle size: P80 Maximum rotational speed : 8500rpm Recommended Operating Speed: 4500rpm Types:3inches/4inches/5inches Note: Please allow 1-2cm errors due to manual measurement, make sure that 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. Package Includes: Package includes: 1PC Abrasive Brush