Permobil Wheelchair Bearing The Precision Permobil Wheelchair or Scooter Bearing is used on many Permobil Wheelchairs as the caster wheel and caster fork stem bearing. Sealed bearings mean maintenance free designReplacement for bearing identification numbers 6002RS, 6002-2RS, 6002Z, 6002ZZ, 600752Inside diameter = 15 mm Outside diameter = 32 mm Width (thickness) = 9 mm Sold individually (each) *Most caster wheels and stem require the purchase of two bearings. Please order quantity 2 for these items. Please message us or call 206 531 0035 for any additional questions.