I have a Singer Futura 500 xl, this is a wonderful machine, the only comment I would make if you decide to purchase this, be sure to read all the instructions carefully and be sure to keep your machine clean and oiled. I love Singer machines, have thier serger also and a very old (40) straight stitch machine I have used for years with no problems. If you take care of your sewing machines they will take care of you! As to the hoops they are not heavy duty, but quite sturdy. My machine came with the 10.5 H x6. w and a 4 x 4. Ihave used both of these hoops alot and have not had a problem with them.