These lockout devices accommodate a large variety of electrical plugs.
The large device (Part No. KYM-987) also locks out necked-down pneumatic male fittings commonly attached to compressed air hoses. These devices accommodate up to four padlocks with 9/32″ maximum shackle diameter.
Part No. KYM-984 is for plugs up to 1 1/2″ wide, 1 1/2″ high, and 3″ long with a maximum cord diameter of 1/2″.
Part No. KYM-987 is for plugs up to 3 1/2″ wide, 3 1/2″ high, and 6″ long with a maximum cord diameter of 3/4″.