ITEM NAME:Durable Castor Wheels Replacement Wheel Part Supplies 6inch Heavy Duty Gray 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. Specification: Material: ABS + Alloy Size: 6 inch Bearing Diameter: approx. 0.8cm (5/16 inch) Package Includes: 1 Piece Wheelchair Wheels Replacement Note: Please allow 1-2cm(0.4-0.8 inch) size difference due to measurement. Thank you! SKU: FUZ0009947475005419.Ball bearings using in all joints, brings a max loading capacity and long working live. Heavy duty, wear-resistant, smooth, silence. Quick knockdown; High Grade alloy and ABS material, durable for use.