Blind Flange Lockout Device, Color Red/Black/Silver, Nut Dia. 2.000 in to 2.750 in, Fits Pipe Size 14 in to 24 in, Flange Size 7-3/4 in to 17-7/8 in, Max. Number of Padlocks 4, Padlock Shackle Max. Dia. 5/16 in, Material Aluminum/Steel, For Use With Pipelines, Standards OSHA 1910.147