Hoop Tech Slim Line-1 4.5-inch Square Window Frame Sets Framing Gage the Freedom Ring uses a

the Freedom Ring uses a strong extension spring to maintain fabric tension during stitching

The thread spinner lets the cone rotate as the thread spools off instead of the thread pulling over the top of the cone

With each size of window frames

12-inch x 15-inch and 13-inch x 16-inch fixtures

Hoop Tech Slim Line-1 4.5-inch Square Window Frame Sets Framing Gage the Freedom Ring uses aSelecting the right window frame for your Slim Line Clamping System is important for your embroidering. Some windows have specific uses and there are 9 sizes to choose from for the Slim Line 1. With each size of window frames, you receive 3 pieces the base adapter that fits into the base of the clamp chassis, the flat aluminum heavy duty top window for thicker and less flexible material, and the stainless steel thin material window for thinner