LAGUNA SUPMX-98-0130 - SUPERMAX CASTER WHEELS, SET OF 4 (FOR USE WITH OPEN STAND)Add mobility to your SuperMax 19 38 drum or combo sander with this set of four casters. These heavy duty casters allow for movement in any direction. They feature a foot operated lock prevents rolling or swiveling and include 1 2 studs and hardware. Features Total Height: 4'' Weight Bearing per Caster: 250 lb Stud size: 1 2"