Master Lock® Circuit Breaker Lockout, Clamp-On, series: Grip Tight™, For Use With: Master Lock®, American Lock® Safety Padlocks and Lockout Hasp, 120/240 VAC Circuit Breaker, 1 Padlocks Maximum, 9/32 in Padlock Shackle Maximum Diameter, Red, Steel, 3/4 in Height, 3/4 in Width, 3 in Depth. Master Lock® 493B Grip Tight™ Clamp-On Circuit Breaker Lockout, 120/240 VAC, Red, Steel, 9/32 in Max dia Padlock Shackle