Blank Plugs - Haz Loc, Thread Gender Male to Male, Trade Size 1/2 in, Compatible Conduit Trade Size 1/2 in, Ends - Hazardous Fittings 1/2 in MNPT, Overall Length 5/8 in, Overall Height 4 3/4 in, Overall Width 5 3/4 in, Weight 0.04 lb, Aluminum, Finish Plain, Hazardous Location Rating Class I, Division 1 and 2, Groups A, B, C, D, Class I, Zones 1 and 2, Groups IIC, IIB, IIA, Class II, Division 1 and 2, Groups E, F, G, Class III, Division 1 and 2, CUP, For Use With Hub, Taped Hole