Package Contents: the package includes 50pcs 1/8 Inches cutting bits, make sure you have enough supplies for your cutting work and projects, the package quantity is sufficient, you can applied it for a long time. Accurate Size: our bits with a shank and tip diameter of about 1/8 Inches, an overall length of about 2.35 inches, and a cutting depth of about 1-1/8Inch(29mm), this router drill bit is designed to deliver cutting effects, that the bit fits with your tools and offers an ideal grip during usage. Reliable Material: these rotary cutter bits crafted from M2 high speed steel, durability and robustness, they that these bits do not break or deform easily, even under high stress, which provides you with a long lasting service life, make your woodworking tasks more efficient. Efficiency and Precision: these high speed steel cutting bits have accurate and stable milling operation, which can keep you away from uneven and jagged edges, it can help you complete woodworking projects