The is triangular. The triangle penetrates into the leather, then and pulls the wire hard, it is not easy to widen or crack the hole of the leather. The needles are deliberately designed to reduce the resistance. Can be used for sewing, knitting or other handwork, especially suitable for leathercraft. Features - ColorLight Grey - Material: Metal. - Package Size: Approx. 11x2x1cm. - Bottle Size: 10x2cm. - Durable and strong: these craft sewing needles are made of premium, durable and sturdy; Strong enough for leather work, some thick clothes or shoes repair and vinyl upholstery mend. - Easy to carry and store: these leather sewing needles are packed in a bottle; Can keep needles secure and organized, easy to carry and store. - Wide application: polished steel sewing needles, give you a comfortable grip; Good for most sewing, threading, stitching, needlework and embroidery, etc. - A set has 1pc bottle with orange lid and 20pcs needle of four kinds of length: 0.86*44/1.25*52/1.63*58/1.83*70mm, each length for 5pcs. - Warm Tip: Dear buyer, due to lighting effect, monitor’s brightness, manual measurement and etc, there could be some slight differences in the color and size between the photoes and the actual item. Sincerely hope that you can understand! Thank you! Package list: 20 x leather needles 1 x bottle