QWORK 3" Caster Wheels for Boltless Shelving 500 lb Load Capacity, 4 Pack Storage Shelf Accessories for Garage, Storage, Workshop, 8-11/16" Total Height, 2-1/16" Side Length

Compatible Type: Designed only for boltless self-locking shelving racks with square holes. Best fit for upright posts with hole spacing around 1.6 " (40 mm) and slot height 1.0 " - 1.14 " (25-29 mm). Total height is 8-11/16", Side lengthis 2-1/16", Wheel diameter is 2-15/16".
Load Capacity: Total dynamic capacity is 500 Ib per set of 4 wheels (=125 Ib per wheel), Static load capacity can reach about 1200 lb when stationary and evenly distributed.
Installation Notes: 1. Use screws and washers only in the small top holes. Large holes are for structural reinforcement, not for installation. 2. Check that all four casters share weight evenly after assembly. 3. Ensure the posts are firmly seated before loading.
Usage Surface: Use on flat, hard flooring (such as concrete or epoxy). Not suited for soft or uneven surfaces. 8 Pack Storage Rack Caster Wheels.
Recommended Applications: Converting warehouse racks, tool shelves, or garage storage units into mobile systems. The product itself has some scratches due to the manufacturing process, which are difficult to avoid. You can view our video for more details.