Thomas & Betts 2559 Liquidtight Strain Relief Cord Connector 1-1/4" Male, Die-Cast Zinc (5 Pack) Male connector has a trade size of 1-1/4 Inch and provides superior connectivity Dimension: 2-3/32 Inch Dia x 2-5/32 Inch Length Reduced overall size, fits into tighter spaces Fittings used in a trade size knockout requiring a NEMA 3R, 4, 6 or 13 listing require a 5262 Series sealing ring Box of 5