The Speedy Stitcher Sewing Awl can be used to sew any heavy material. It produces a lock stitch just like a machine. Can be used to sew on leather and other material. Use for awnings, tents, shoes, sails, saddles, and much more. Contents:Awl2 interchangeable needles (#8 straight needle, #8 curved needle)Full bobbin of waxed thread