SP20/M20/M Swivel Cable Conduit Fitting, Brass Silver Nickel Plated. Type B – IP54 Straight Fitting – Swivel External Thread. Has a two part construction without seals. When it is inserted into an enclosure or knockout and fully tightened, the fittings will still swivel 360°. Please note however, that this design is still not intended to be used on applications that are constantly moving. It is still intended as a ’swivel to fit’ product only.