Casters are made of durable thermoplastic elastomer (TPE) and steel. The surface is chrome plated to avoid rust and corrosion, and can be used for a long time.Five horizontal mounting holes are used to fix the guide rail, which is not easy to deform; expand the angle to make the mounting plate more stable; tight L-shaped mounting plate saves space and is easy to install; the corners were reinforced to make the mounting plate more stable.Usually used in small projects and movable furniture, including dressers, boxes, under the bed lockers, shoe cabinets, toy boxes, cabinets, bookcases, easels, etc. Detailed description: Product Name: Caster Wheels Material: thermoplastic elastomer (TPE) + steel Diameter: caster diameter 25mm / 32mm / 38mm Brand: Pluokvzr Portable: Yes Type: L-Shaped Rubber Caster Wheels Color: Black Features: Rugged and Long-Term Use,Safety,Floor Protection,Wide Range of Applications Parts List: 4 x Furniture casters wheels 1 Set of screw INSTANT MOBILITY: Four-pack of threaded casters wheels that quickly attach to small and medium sized utility carts, barbeque grills, shelving units, and other items commonly found in workshops, garages, kitchens, and offices. 24 LB LOAD CAPACITY PER WHEEL: Each caster supports 24 lbs of load (with a 212 lb total capacity for all four wheels). Two of the casters have brakes while all four swivel 360-degree pivoting action for smooth wheeling on hard, smooth surfaces such as concrete with very low dragging. QUIET MOVEMENT ON HARD SURFACES: A solid solution for easily positioning your steel stand to any desired area.Really helps moving it without inducing vibration, rattling, squeaking, and other hazards and annoyances. DOUBLE LOCK MECHANISM: The swivel dual lock caster kit is the perfect solution for easily positioning your steel stand to any desired area in your shop. Double lock mechanism locks both the wheel and the swivel bearing at the same time, which is essential for safety. DOUBLE LOCK MECHANISM: The swivel dual lock caster kit is the perfect solution for easily positioning your steel stand to any desired area in your shop. Double lock mechanism locks both the wheel and the swivel bearing at the same time, which is essential for safety.Condition:New