1 Pair of Black solid 190x27mm castor wheels with fork, fits many standard NHS style wheelchairs that take the size 190x27mm. 1 Pair of Replacement front wheels that fits many standard NHS style wheelchairs. The wheel and fork can be separated if necessary and used as required, the wheel itself has an 8mm axle and 60mm hub width. Pair of Replacement wheels and fork Fits many standard NHS style wheelchairs 190x27mm axle 8mm Can be separated 60mm hub width