Blind Flange Lockout Device, Color Red, Nut Dia. 1.930 in to 3.310 in, Fits Pipe Size 14 in to 48 in, Flange Size 1-15/16 in to 3-5/16 in, Max. Number of Padlocks 4, Padlock Shackle Max. Dia. 9/32 in, Material Aluminum/Steel, For Use With Pipelines, Temp. Range 40 Degrees to 194 Degrees F, Standards OSHA 29 CFR 1910.147