These high-quality Japanese needles are a product of true attention to detail. The nickel plated steel needles are polished lengthwise to ensure smooth fabric piercing, and the gold plated eyes are polished on both sides for easy threading. These needles are flexible and warp resistant, running smoothly through fabric with an eye large enough for size 12 pearl cotton or sashiko thread. Needle sizes in mm, thickness x length: 1.02 x 66.7, 0.97 x 44.5, 0.84 x 51.5. Sashiko Needles by Hiroshima from Tulip Corporation of Japan, Assorted long sizes.