Yougle 3" Paracord Bracelet Lacing Weaving Stiching Needle Fid Bushcraft 1 to 100 Pcs/lot Also known as a "fid". Outer Diameter: 5mm; Inner Diameter:3mm This is a great tool for creating your paracord projects. This is aluminum, round-end paracord lacing and stitching needle. The back end of the paracord lacing needle is hollow and threaded to securely hold the paracord.