Specifications: Clockwise rotation angle: 90 degree. The key can be switched on and off. Scope of application: electrical cabinet lock, communication box, optical fiber box, telephone machine, attendance machine. Nickel plating and superior zinc alloy material. The lock body is deeply threaded and installed more firmly. With a thickness of 1.5mm, the straight hook is safer and more durable. With two keys. Item Name: Cam Lock Material: Metal Type: 20/30mm (Optional) Features: Cam Lock, Anti-theft, Rotation Size: 20mm: 3cm x 4.6cm/2cm x 4.6cm/0.79" x 1.81" (Approx.) 30mm: 1.18" x 1.81" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Cam Lock 2 x Keys