PFERD Universal line PSF cut-off wheel is general purpose wheels provide fast cutting performance and good service life. Recommended for universal cutting applications on steel. PFERDERGONOMICS recommends the thin cut-off wheels to substantially reduce vibration, noise and dust levels during use and to improve working comfort. PFERDEFFICIENCY recommends the cut-off wheels for long, fatigue-free and resource saving work, with perfect results in the shortest possible time. Recommendations for use .045" thickness for fast, convenient cutting with minimized burr formation. Specification: Diameter (inches): 6; Thickness nominal (inches): .045; Thickness metric (mm): 1.6; Maximum Rotational Speed (RPM): 10200; Type: Type 1; Bore Size (inches): 7/8; Abrasive: Aluminum Oxide A.