Material Main Body: 304 - Stainless Steel Arm: Aluminum Rotor System Turnstile access barrier is provided by 90° controlled one-way opening arm. Lock System An automatically controlled door module is formed with an electromagnetic lock on the handle. Protection All parts inside the turnstile are made of corrosion-resistant products. Middle Plate Optionally, the middle plate inside the arm can be closed with materials such as glass, plexiglass, decota, etc.