491B - Grip Tight Circuit Breaker Lockout. Features: Fits wide or tall breaker toggles typically found on hi-voltage/hi-amperage 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.

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