This durable plastic circuit creaker lockout device from Accuform Signs features a bar clamp design, allowing the lockout to simply slide onto a breaker switch and lock securely into place by closing the handle down. This unique design allows for fastest lockout application time and quick and easy removal as well. The device does not rely on a traditional screw mechanism to secure, and can easily be applied with just one hand if needed. No more frustration with small, difficult to grip screws: simply lift open the handle, slide onto the breaker bar, close the hand down and secure with a padlock (sold separately).The unit uses two metal jaws for optimum secure grip. The circuit breaker lockout is a visible safety red to call attention to the locked out switch. This circuit breaker lockout is also uniquely designed with an octagon peg which allows specially designed tags (sold separately below) to be secured directly to the device. Lockout device measures 15/16"W x 3 1/3"L x 1 1/2"D.