Hoop Tech 5 Inch Round Window Set for PR600-1 Clamping System

Hoop Tech 5" Round Window Set for the PR600-1 Clamping System can be used best for the back if a cap. The Hoop Tech 5" Round Window Set for the PR600-1 Clamping System round shape fits the crown of the cap and allows for a large sewing field.  MODEL #599438