Feature: 1. MAIN APPLICATION: This locking device isolates and secures the circuit breaker switch to defend employees from electrical accidents during equipment maintenance. 2. PP, NYLON MATERIAL: Made of premium PP and nylon PA material, the lock is strong and sturdy, corrosion resistant, impact resistant, and temperature resistant. 3. HAND WHEEL FASTENING SCREW: The lock can be locked manually without tools. The threaded screw handwheel is comfortable and labor saving to use. 4. ALLOY SAWTOOTH DESIGN: The interior of the lock body is designed with alloy sawtooth, which is more closely engaged with the handle of the circuit breaker, and is not easy to fall off during use, thus ensuring the effectiveness of locking and tagout to a greater extent. 5. UNIVERSAL: The lock device can be used on all motor protection switches. When rotating the external rotating handle, connect the serrated clamp firmly to the housing and prevent touching the motor protection switch. Specification: Item Type: Circuit Breaker Lock Material: PP, Nylon, Alloy Clamping Range: Approx. 24 to 46mm / 0.94 to 1.81in Lock Hole Diameter: Approx. 8mm / 0.31in . Package List: 1 x Circuit Breaker Lock