1,Motor Protection Switch Safety Lock: Easy installation with handwheel fastening screw, no tools required. Clamp securely to motor protection switch, hanging insulating lock to prevent loosening. Fits maximum clamp size of 53.5mm. 2,PA Aluminum Alloy Material: Features alloy sawtooth design inside lock body for tight engagement with circuit breaker handle. Effectively isolates and locks out circuit breaker switch for employee safety during equipment maintenance. 3,Versatile Usage: Suitable for all machine protection switches. Securely connects to housing when rotating external handle, prevents contact with motor protection switch. Ideal for daily maintenance, repair, adjustment, cleaning, inspection, and debugging of equipment. 4,Multi Lock Management: Four lock holes allow multiple users to lock out. Can be locked using four ≤8mm diameter padlocks. Maximum clamp size of 53.5mm, used to secure switch panels of motor protection switches during maintenance. 5,IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, fine workmanship, attention to details, helps you improve the working efficiency! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.