2 in 1 Mini Belt Disc Sander,Bench Grinder Small Spindle Sander Machine for Wood Metal Stone Diy W465P202885Featuring 7 gear speed regulation, ranging from 4250 to 8500 revolutions per minute (r min), and a forward reverse switching function, this equipment is capable of satisfying the grinding demands of diverse materials. The spring designed mechanism enables the adjustment of the sanding belt's tightness, ensuring smooth and flexible operation, thereby enhancing the adaptability and efficiency during the grinding process. Equipped with 10 abrasive belts,