ITEM NAME:2x Wheelchair Front Castor Wheels Replacement Part Description: Free air, stop puncture Quick knockdown High Grade alloy and ABS material, durable for use. heavy duty, wear-resistant, smooth, silence Perfect for most manual wheelchairs carts front wheel, walking aids Ball bearings using in all joints, brings a max loading capacity and long working live Come with screws, easy to install and removed Material: ABS + Alloy Size: 7 inch; Bearing Diameter: approx. 0.8cm (5/16 inch) Package Includes: 2x Wheelchair Wheels Replacement Note: Please allow 1-2cm(0.4-0.8 inch) size difference due to measurement. Thank you! SKU: FUZ0017033619430651.Ball bearings using in all joints, brings a max loading capacity and long working live. heavy duty, wear-resistant, smooth, silence. Free air, stop puncture. Quick knockdown.