Hoffman CCSS48BBCRI, Base Bracket Coupling, Rotary Int, Fits 48.3Mm Tube, SS Type 304Swivel Base Internal Bracket Coupling for directly mounting enclosures to a machine or the floor. Turns through 340 degrees with rotation limiter. Preset torque. Maintenance-free bearings. Type 304 polished stainless steel finish. Includes gaskets and enclosure mounting hardware. Base-mounting fasteners not provided.