Easy to Use: Simply pull the base outward, remove or insert fixed needle. Note: Don't take fixed needle out forcibly, it is easy to cause the solder joint between the ring and the needle to fall off. Two Different Sizes: The long needle is 18mm, suitable for locking the leather edge of 6-12mm thickness; the short needle is 12mm, suitable for locking the leather edge of 0-6mm thickness. PERFECT DESIGN: fixed stitching with positioning needle bag. Designed to lock the leather before sewing to your hands and keep all parts in place. Protective tube made of brass with end cap protects your fingers from injury. Wide Application: The leather suture positioning needle is used to fix the suture when making leather products by hand, is the ideal helper for DIY leather craft. High Quality: The fixed suture base is made of brass and with anti-slip design, and the needle is made of stainless steel, which is corrosion resistant, rust resistant and durable.