Grip Tight™ circuit breaker lockout. See video of how it works. Fits standard height and tie-bar toggles typically found on 120 and 240 volt breakers. Innovative patented Grip Tight™ design effectively locks out circuit breakers. Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle. Great strength with univeral fit. Compact device is easy to carry and easy to store. Accepts all American Lock® and Master Lock® safety padlock shackles and lockout hasp Dias. Durable construction with powder coated steel and reinforced polymer for operation in harsh environments. Master carton quantity 24. commercial packaging. Master Lock® Circuit Breaker Lockout, Clamp-On, Series: Grip Tight™, For Use With: All Master Lock®, American Lock® Safety Padlock Shackles and Lockout Hasp, 1 Padlocks Maximum, 9/32 in Padlock Shackle Maximum Diameter, Reinforced Polymer/Steel, Red, 3/4 in Height, 3/4 in Width, 3 in Depth