One Pair of Front 200x27mm Castor Wheels with Solid Tyre. These are a pair replacement Front wheels that will fit many standard style wheelchairs. These are designed for use with 8mm diameter axles (not supplied) and they come supplied with 12 washer spacers (6 for each wheel) to allow you to space the hub width to approx 50mm. If you need them to fit a wider space you may need to use additional washers (not supplied). Without the washers the hub width is 39mm.