Acorn Superglide 120 stairlift roller assembly provides a reliable replacement component for maintaining smooth operation. This white nylon roller features a concave design to track securely along the rail system. It includes a heavy-duty bolt and locking nut for a stable installation. Designed specifically for compatibility with the Superglide 120 model, this part ensures the lift continues to glide quietly and efficiently. For 1 wheel assembly as shown Measurements: • Weight: 4.0oz