Sanding Disc Grinders | McMasterCarr
The threaded spindles on these grinders accept raisedhub grinding wheels. Grinders have a spindle lock for fast wheel changes and a slide handle.. Wheel guards are required when using grinding wheels and cups.. Backup pads are required when using sanding discs. Thread the backup pad onto the tool''s arbor, then attach a sanding disc and secure with its disc nut.