Our Classic Black & Yellow handle holds the slant or round needle configuration. Single line of Slant Needle sizes #5Fine, 5, 8F, 8, 10F, 10, 12F, 12, 14F, 14 (FINE 0.25mm or STANDARD 0.35mm). Fine 0.25 needles are perfect for creating the individual hair stroke look. Standard 0.35mm are great for eyeliners, solid brows, lip liners. Round Needle sizes #1, 2, 3, 5, 7, 9, 11. Using the round style needle is great for smudge look eyeliner or touch ups. Multi-line slant needle configuration is available in #24, 36, 48, 60, 72. Multi-line needles work well for thicker eyeliner, developing a great pencil style lip liner or fill in full lip color. The CURVE needle is great for Micro-Blading or Micro-Scoring, The CURVE needle fits perfect in this Classic Black & Yellow handle.