Leather needles have a wedge-shape point that penetrates leather, suede, vinyl, heavy faux suede and leather, as well as other thick, nonwoven fabrics, without tearing them. When using a leather needle, it’s important to stitch accurately because the needle leaves a large, permanent hole. Tie thread ends, instead of backstitching, to prevent perforating the surface. Because the needle has a slight cutting point, never use it on woven or knit fabrics.