[▶Holds 2-3 keys and includes a tightening lever that keeps keys in position and simplifies adding or removing keys. ▶Key Turner for arthritis Foldable Secure Key Holding Turning Device Locks Keys in Place for Easy Turning and Storage of Home Office Building Key ▶Easy to turn handle makes opening locked doors easier for the elderly and disabled with hand arthritis carpal tunnel or wrist pain ▶Key Turners are a great daily living aid for elderly or handicapped individuals. "▶Tip: The key turner aid is suitable for flat yale style/cylinder rim lock keys not suitable for chubb keys The diameter of the keyhole should be 5mm or greater."]