Description These ball casters can swivel 360 degrees. Suitable for processing machinery, furniture, machinery, toys, and similar applications. Smooth movement and wear-resistant design allow for long-term use. Quiet operation with strong load-bearing capacity, making them highly practical. Features - Color: As shown - Material: Steel - Size: 4.50 x 4.50 x 2.00 cm / 1.77 x 1.77 x 0.79 in - Made of high-quality materials, durable and sturdy. Strong load-bearing performance for stable and safe use. - Ball transfer units are suitable for use in electronics, hardware, machinery, chemical, food, forestry, book handling, supermarkets, rubber, and other industries. - Ideal for use in conveyor systems, feeding systems, processing systems, processing machinery, and packaging machinery auxiliary equipment. - Also works well in drawer applications, allowing smooth rollout with minimal effort. - Provides flexible, high-speed, and stable operation for rotating and redirecting cargo. Package list: 8 x Ball Bearing Rollers