Fits standard height and tie-bar toggles typically found on 120 and 240 volt breakers,suitable for single and double toggles. The circuit breaker locks are suitable for industrial,electric power,chemical,automobile,flammable,household,coal mine and explosive places. It can also be used to lock out a breaker from a neighbor stealing power. Adjust to breaker with simple thumb turn and then close clamping handle for a tight grip on the toggle,and the locking operation can be easily completed without a screwdriver,breaker lock can isolates hazardous energy and prevents unauthorized access. The Nylon body and non-conductive plastic shackles of the SafeKey Padlock are lightweight and durable, can be used in electrical isolation situations to prevent electric shock, ensure the strength and not easy to deform and break. Material: stainless steel colour: As shown specifications: Set B Package Contents: 2 x circuit breaker locking device 2 x nylon padlock 2 x lock mark labels Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.