Check the listing for details. Belt Grinder RUBBER Wheel for 2x72" knife making grinder. Condition: New. Listed at 68.50 USD. Precision cnc aircraft aluminum wheel with rubber coating for 2x72" belt grinder. This wheel is 8" in diameter & 2" wide. Includes sealed bearings which can easily be replaced when worn. Bore of the bearings is 1/2". Please note that some companies advertise wheels with cheap, 2 part mix urethane coating as "Rubber Coated", they are not rubber, our wheels are coated with vulcanised rubber & once you have used such a wheel you will appreciate the difference as rubber wheels are far superior. The wheel comes with a bolt axle with 1/2-13 threads to suit our tooling arms. This 8" wheel is ideal for hollow-grinding straight razors, pocket knives, hunting knives, small axes etc. We use these wheels in our top quality grinders & have tested them extensively. We do not paint or anodize our wheels as this just comes off basically on your first use. Please also have a look at our other listings, visit our Ebay store & search OriginBladeMaker on Youtube for some other fun stuff.