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 quickly. Wide Application: these cutting bits are compatible with spiral saw power tools, not just designed for cutting wood, but they cut a variety of materials including fiberglass, OSB, laminates, plastic and vinyl/aluminum siding, can meet your different work requirements. The right size: These cutting bits are about 1/8 inches and fit many auger bits, helping you accomplish everyday woodworking tasks. Sufficient quantity: This package comes with 50 cutting drill bits, which can last a long time and help you complete many jobs. Colour:As Shown Material:Metal Size: Diameter:about 1/8 inches Overall length:about 2.35 inches Package Contents: 1set * drill guide Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.