This listing is for a quality RULER FOOT with "ball bearing" outside diameter 1/2" giving accurate 1/4" from needle to the edge at all times.   

It comes with special shank adapter for Juki TL-2200QVP long arm and mid-arm quilting machines.

The ball bearing gives smoothness and reduces drag when quilting with all templates or rulers.

Important: First loose the screw so that the foot drops gently on the 

sandwich and then tighten the screw.  Try to move the sandwich freely 

by hand.  If tight, then loosen the screw and raise the foot just a little bit higher but not too much.

*High Heel Ruler Foot for quilting with thick rulers or templates

*Free-motion foot is adjustable so you can raise or lower the foot

depending on the thickness of your ruler/template or the thickness of the sandwich quilt.