The Flat Free Solid Rubber Wheel by Grainger is a 10 inch diameter by 2.5 inch wide solid rubber wheel with a 1 inch bore size and 1/2 inch tread depth. It has a load capacity of 350 lbs and is made of high quality rubber that is cut, tear and puncture resistant. This solid rubber wheel requires no maintenance or air pressure checks, making it ideal for carts, dollies and other material handling applications. The rubber compound provides good traction and a smooth ride over uneven surfaces. Overall an excellent quality solid rubber wheel for industrial use.