Size Information: The replacement wheelchair has a diameter of 6 inches (15 cm), a width of 1 inch (2.5 cm), and a bearing spacing of 1.38 inches (3.5 cm). The bearing inner diameter measures 0.315 inches (0.8 cm), while the screw length is 2.95 inches (7.5 cm) with a diameter of 0.3 inches. These wheels for walkers are designed to fit most standard wheelchairs, walkers, and rollators. (Please carefully check the product specifications and dimensions before purchasing to ensure compatibility with your equipment.) Durable Materials: Crafted from solid rubber, these wear-resistant tires deliver long-lasting performance. The metal bearings provide excellent weight-bearing strength, ensuring reliable everyday use. Quiet and Smooth Rolling: Featuring an anti-slip surface and wear-resistant design, these rubber wheel replacements ensure stable and silent rolling, making them ideal for indoor and outdoor use. Easy Installation: The rubber wheel set includes 4 anti-slip solid caster roller wheels for walkers and 4 screws, allowing for quick, tool-free installation. Please verify the size of the heavy-duty office wheelchair front wheel accessories and screws before purchasing, then use this front replacement wheels kit to swap old one out. Versatile Applications: This wheelchair front wheel set is compatible with various equipment, including office desks, chairs, carts, mobility aids, and healthcare vehicles. Save effort and regain mobility with these rollator walker anti-slip replacement casters rollers wheels. 4PCS Rubber Replacement, 6 Inch Wheelchair Wheels for Walkers,Rubber Wheel Replacement, Anti-Slip Solid Caster Roller Wheels,Universal Wheelchair Replacement Wheel Accessories for Walkers