491B Large Electrical Breaker Lockout by Master Lock fits most all Large breaker toggles.491b handles both single and double type breakers. Easy to use: just apply, close and lock. Grip tight design gives superior holding power.
491B Large Breaker Lockout Features
Grip Tight circuit breakers work with simple thumb turn and clamping handle
Patent-pending innovative design effectively lockouts out all styles of breaker toggles
Grip Tight combines great strength with universal fit