Package Includes 4 packs of 3 inches heavy-duty locking caster wheels, bolts x 16, nuts x 16, screws x 16, and washers x 16. Two installation ways for locking caster wheels help save your time and don’t need to buy extras screws to install your workbench. PU Wheels & 360 Degree Rotation: Each of the swivel caster locking wheels are made from Polyurethane materials that are sturdy constructed. You can glide the 3 inches caster wheels effortlessly on both wooden floors and carpet, from corners to a couple of doorways. Dual Locking & Safety: The industrial swivel casters set of 4 are designed with a double locking mechanism. You can easily lock the wheels and direction to keep the workbench in place as the brakes hold firm. In addition, these swivel locking castors wheel sets are noiseless and don’t leave marks on hardwood or other flat finished surfaces to protect your floors well. Double Ball Bearings & Strong Load Capacity: All swivel locking casters set of 4 are double steel ball-bearing designed, which brings a maximum loading capacity of 1200 lbs. Furniture wheels roll and rotate smoothly from indoor flat surface to outdoor rugged place. Multiple Applications: The lockable furniture caster wheels set of 4 can be widely used for a workbench, wood box, kitchen table, cabinet, furniture, and other items commonly found in the workshop, garage, kitchen, factory, and office. It’s very convenient for you to clean the floor by moving the workbench smoothly. Imagine if you have the dual locking castors installed on your workbench, would you save a lot of effort and greatly increase your work efficiency? Do you need the castors wheels sets 4 with brake to move the furniture easily and smoothly? If yes, these castors wheel sets will fit the bill. All metal industrial wheels are made from Polyurethane materials and sturdy constructed. You can glide the workbench casters effortlessly both on wooden floors and carpets from indoor to outdoor. The locking castors wheels set is designed with a double locking mechanism. You can easily lock the wheels and direction to keep the workbench in place as the brakes hold firm. These swivel casters are double steel ball-bearing designed, which brings a maximum loading capacity up to 1200 lbs. The swivel caster wheels roll and rotate smoothly; don’t leave marks on hardwood or other flat finished surfaces to protect your floors well. You can use these heavy duty caster pack to your workbench, wood box, kitchen table, cabinets, furniture, shelving, and others commonly found in the workshop, garage, kitchen, factory, and office from indoor to outdoor. The caster set with brake allow you to clean the floor easily by moving the workbench smoothly. Product Specification for Industrial Caster Wheels: Quantity: Locking casters x 4, bolts x 16, nuts x 16, screws x 16, and washers x 16. Measurement: locking wheels’ diameter/ 3 inches, wheels’ thickness/ 1.25 inches Materials: polyurethane and sturdy steel Color: Burgundy and bright silver Load capacity: 1200 lbs Breaking system: Dual locking Double ball bearing Widely used: Workbench, wood box, kitchen table, cabinets, furniture, other heavy and large items