... used for quilt, bedspread, mattress, etc computerized quilting machine, single needle computerized quilting machineIntroduction TypeDH-26ADH-26BDH-26CDH-26DQuilting Size2. ... lock style, big Rotary ShuttleSewing Thick1200g/m*m(Mas)Sewing Speed2000SPM Stitch 2~7mmNeedle(SINGER) MR5 18~22# ... can select working parameters required, such as single stitch and sewing speed etc.4. The stitch trace is shown ...