AD 56395222 8" x 2" Green Urethane Drive Wheel for Nilfisk Advance Convertamatic 32B. Heavy duty cast wheel includes bearings and grease fitting for easy servicing. Long lasting green or black polyurethane treaded "tire". Fits Advance Convertamatic 32B walk-behind floor scrubbers. This wheel is non-keyed. Will not fit Convertamatic 32BD, 38BD or Hydro-Retriever 320BHD, 380BHD (use our AD 56395233, 8 x 2" Keyed Poly Wheel). If you're looking for the swivel casters for this unit, use our AD 56365555. Two wheels are required per unit. Priced Each. Replaces Nilfisk Advance 56395222. Our Part Number AD 56395222