Hoop Tech 4 x 4 Window Set for PR600-1 Clamping System

The Hoop Tech 4 "x 4" Window Set for PR600-1 Clamping System is the most popular shallow pocket window size for clamp owners.  The Hoop Tech 4 "x 4" Window Set for PR600-1 Clamping System is a nice size for general logo work. The Hoop Tech 4" x 4" Window Set forthe PR600-1 Clamping System will fit into many pockets sizes and is the perfect window for sewing on knit hats and Christmas stockings. MODEL# 599432