One stand works for truing , balancing and checking bearings Durable frame provides a stable platform for accurate balancing Accepts up to 5 inch wide rims and 23 inch diameter Foldable designs saves space in the truck or workshop Compatible with wheel bearings with a 15mm or bigger inside diameter (axle size) Given a 4 star rating by Motocross Action Magazine, who say; for the home workshop the Gyro is perfect" Manufactured to exacting tolerances using high grade materials "