A streamlined version of the GMQ-Pro home quilting system. It turns your personal sewing machine into an affordable, user-friendly Quilting System. Fits machines with up to a 16" throat. Two sizes included -Crib (64") and Queen (98"). This is a No-Baste three rail system (fourth rail optional). Custom-designed rails come with the Fabri-Fast system for quick and easy fabric installation. You might want to also order the Sure Stitch Regulator, the fourth rail, and the speed control switch.