4-pack 40mm rubber wheels with M8 threaded rod 【Material】: The casters are wheels made of soft rubber and TPE material, extremely quiet, no disturbance during work, high elasticity, 360° flexible use. 【Bearing design】: Ball bearing, integrated bearing, steel ball guide design, sealed bearing has low friction resistance, flexible bearing, can rotate 360 degrees, stable, high temperature resistance, high speed, dustproof and non-stick, and can be used for a long time Built-in silent bearing, very quiet and durable. It is the perfect choice for any DIY furniture with movable wheels. 【Suitable for a variety of floors】: Made of soft rubber, which is soft and does not damage the floor. Rubber rollers have elasticity, toughness and durability. Suitable for all types of floors, such as ceramic tiles, cement floors, marble, carpets, parquet floors, etc. Features: There is no brake, 360-degree rotation can be completely free to move, and the applicability is stronger. The wheels are made of soft rubber and stainless TPE material to improve strength and durability. durability. Suitable for various floors. Built-in low-noise bearings, quiet movement. Material: Soft rubber and TPE Color: black Wheel diameter: 40 mm Thread M8 x 15 mm Load capacity 20 kg per wheel. Package content 4 x 40 mm swivel casters, with M8 x 15 mm threaded rod