The gripper rings allow increased control during quilting and precise guiding of larger quilt projects when quilting with the Q Series sit down table models. The area to be quilted is kept completely flat and wrinkle-free. The gripper ring set «made for BERNINA by Martelli» includes an 8”and an 11” ring Precise guidance of quilt Increased control while quilting Flat & wrinkle-free quilt Includes 8" & 11" gripper ring The gripper rings allow increased control during quilting and precise guidance of larger quilt projects. Compatible with the Q-Series table models.