Check the listing for details. Belt Grinder contact Wheel for 2x72" knife making grinder. Condition: New. Listed at 34.20 USD. Steel core with 70 duro urethane coating. This wheel is 2" 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 industrial grade urethane & they're machined after vacuum setting for optimal concentricity. This 2" wheel is ideal for installing as a top idler wheel on a 2x72" belt grinder to allow light contact grinding & de-burring. Also have a look at our listing for a 2" wheel with 70 duro vulcanized rubber coating for harsher grinding operations. 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.