Ideal Circuit Breaker Lockout Is Designed For Use With 480/600-Volts Single-Throw/Multi-Pole Circuit Breaker Switches And Can Be Snap-On Mounted. This Cleat Accessory Securely Locks Out Long Sliding Switch Throws With Large Angular Rotation Commonly Found On Some Breakers For Total Safety Of The Device. It Measures 4 Inch X 2. 500 Inch X 2 Inch. Lockout Is Rohs Compliant.