Dritz 9020 Curved Upholstery Needle, 4-Pack Curved upholstery needle The curved upholstery needles is used for slip stitching cushions and attaching outer-fabric sections Used for seat work (bridle ties) and box edges Also s used for edge rolls and stitching burlap to springs Includes 3-inch, 4-inch, 6-inch 4 needles per pack