No Tool Circuit Breaker Lockout install quickly and easily without any tools. Featuring a compact universal design that fits a wide variety of single, double and triple handle circuit breakers, the 'No Tool' Circuit Breaker Lockouts are easily attached with no modifications to the panel or circuit breaker. To install, the user simply puts the circuit breaker handle to the 'OFF' position, places the lockout over the handle, tightens the set screw by hand, rotates the toggle and applies a tag and padlock.