Commonly used for shading, blending and detail work on straight line work such as lettering. The needles are configured in a straight line. Our pre-made flat shader tattoo needles are made using 316L stainless steel, on the bar, pre-sterilized with EO Gas, individually blister-packaged and ready to use, Each tattoo needles is stamped with sterilization expiration date. All the F needles are #12 needles. We offer the following sizes: 4F, 5F, 6F, 7F, 9F, 11F, 13F and 15F.