The 360 degree compression fitting makes the internal locking footring the most slip resistant in the industry.

Continuous contact within the hub prevents standpipe deformation caused by over tightening the knob on regular footring designs.

The footring is loosened and tightened by turning the outer ring.

Fits on all standpipe diameters (49.7mm, 50mm, and 50.8mm).  Exceeds ANSI BIFMA X5.1-2002 testing.