These are really handy. I use it to sew leather, canvas, rifle slings or any other heavy materials. Very easyy to use and you can put in your own stove jack in about a half hour. Takes less time than packing it up and taking it to the repair shop. You can get different size and shape needles for various jobs. Most leather and tack stores have them, got mine at Tandy Leather 40 years ago.
