Lockout tagout circuit breaker lockout is best used on wide or tall breaker toggles typically found on hi-voltage/hi-amperage breakers; Best used as part of a comprehensive OSHA compliant lockout tagout safety program Innovative patented Grip Tight design effectively locks out circuit breakers with a simple thumb turn and then close clamping handle for a tight grip on the toggle Durable construction with powder coated steel and reinforced polymer for operation in harsh environments 5-1/8 in. (13 cm) long circuit breaker lockout with 25/32 in. (2 cm) height and 2-3/4 in. (7 cm) depth Includes one lockout tagout circuit breaker lockout; Accepts all Master Lock and American Lock safety padlock shackles and lockout hasps (padlocks and hasps sold separately)