Easy to install: Screw swivel casters, universal casters with brake, set with nuts and wrenches, the upper wave plate is an octagonal wave disc, easy to install. Stem Casters, Casters with No Noise Set of 4 Castors.Heavy duty (load capacity): A single wheel can carry 150lbs, four wheels can carry more than 450lbs, easy to push. 3" Locking Swivel Casters, 3/8"-16 x 1" (Screw Diameter 3/8", Screw Length 1") Threaded Stem Casters, Casters with No Noise Set of 4 Castors.Non-marring thermoplastic rubber wheels：Smoothly moved with no marking, won't harm your wooden floor, no noise, the surface of the rubber wheel is soft and better protects the ground.Multitude of uses: These casters are widely used, generally used for workbench, cart, trolley, shelf, wooden cabinet, furniture, home appliances, etc.Screw rod specification: Please confirm the size of the screw before purchasing, so as to avoid buying mistakes. Screw specifications: 3/8"-16 x 1": Screw Diameter 3/8 inch (0.9525cm), Screw Length 1 inch (2.54cm). Screw specifications: 3/8"-16 x 1": Screw Diameter 3/8 inch (0.9525cm), Screw Length 1 inch (2.54cm). Screw specifications: 3/8"-16 x 1": Screw Diameter 3/8 inch (0.9525cm), Screw Length 1 inch (2.54cm). Product Description Note: There are three screw rod specifications for the screw casters sold in this shop. Please confirm the required screw specifications before purchasing to avoid buying mistakes. Note: There are three screw rod specifications for the screw casters sold in this shop. Please confirm the required screw specifications before purchasing to avoid buying mistakes. Note: There are three screw rod specifications for the screw casters sold in this shop. Please confirm the required screw specifications before purchasing to avoid buying mistakes. Easy to install: Screw swivel casters, universal casters with brake, set with nuts and wrenches, the upper wave plate is an octagonal wave disc, easy to install Heavy duty (load capacity): A single wheel can carry 150lbs, four wheels can carry more than 450lbs, easy to push, labor-saving. They are screw casters, threaded stem swivel casters, flexible rotation, safe and reliable. Smoothly moved with no marking, won't harm your wooden floor, no noise, the surface of the rubber wheel is soft and better protects the ground. These casters are widely used, generally used for workbench, cart, trolley, shelf, wooden cabinet, furniture, home appliances, etc