MATERIAL: These stem casters are made of polypropylene (PP) and steel LOAD CAPACITY: 25 kg per caster, the caster construction is sturdy and durable SIZE: The stem has a diameter of 8 mm and a length of 38 mm. Used with the attached socket, it provides a secure fit SMOOTH OPERATION: Ball bearings and 360-degree rotating casters allow heavy furniture to be moved freely when needed, the smooth PP surface prevents scratches on the floor PERFECT FOR: Furniture projects and replacing old and worn casters. Antique brass color provides a vintage look, fits your kitchen cart, laundry cart, accent chair, office chair, side table, coffee table, wardrobe and trundle bed Size:50mm Casters with Bushings If you are working on a furniture project or looking for replacements for old worn casters, our stem casters would be a good choice for you. These stem casters are strong and durable. Perfect for trolleys, chairs, sofas, tables, wardrobes and beds. Specifications: Material: Polypropylene(PP) and