These holeless breaker lockout systems are extremely versatile and easy to install with their patented wing screw design, eliminating the need for screwdrivers! Secure the lockout system to the switch tab, return the cover to the thumbscrew and lock it to prevent the collar from loosening. The removable plates (included) expand the range of compatible circuit breakers. Suitable for padlock hoops up to 7mm in diameter. Dimensions - Width (mm): 24.13 mm. Dimensions - Height (mm): 56.01 mm. Dimensions - Thickness (mm): 16.51 mm. Size - W x H x D (mm): 24.13 x 56.01 x 16.51. Max.diameter padlock height (mm): 7.14 mm. Minimum shackle spacing: 19.05 mm. Dimensions: 24.13mm W x 56.01mm H x 16.51mm D. Material Features: Material: Polypropylene. Material Type: Polypropylene. Red color. Operating temperature ° C: 80 ° C. Minimum operating temperature ° C: -20 ° C. Adhesive (Y / N): No. Product features: Max. of padlocks attached: 1. Risk: Electrical risk. Voltage: 120/277 V. Compatibility: Max. Width. switch height (mm): 16.00 mm.