Sigma Electric ProConnex 49215 Strain Relief Cord Connector 3/4-Inch, 1-Pack Strain relief cord grip connector Connects S, SO, ST, SJ, SJO and SJT cord to a 3/4-in knockout in a box or enclosure Zinc die-cast construction and suitable for wet locations when used with a sealing locknut (not included) For flexible cord 0.625" - 0.750" Product is UL & CSA listed