McMaster 69915K55 Plastic Submersible Cord Grip, NPT Threads, for 0.51" 0.71" Cord OD, 3 4 Knockout Size 101SB BK 2PK Security Features Paracentric Keyway Material Security Features Paracentric Keyway Material Aluminium Color Yellow Key Style Standard Labeling No Label or Tag Opening Type Key Minimum Temperature 0 Degrees F Maximum Temperature 350 Degrees F Body Material Coating Anodized Non Removable Key Yes Resistance Properties Corrosion Resistant 1 7 8 in Output Type Deep Well Container Features Carrying Case Tether Ready No Drive Type Impact Includes Standard Sockets Standard Sockets Not Included Non Magnetic Yes Compatible Fastener Type Adapters these cord grips are IP and NEMA rated to keep out dust and water A locknut anchors them in the knockout