Package Includes: 5 pieces of countersink drill bits in sizes of 1/4Inch, 3/8Inch, 1/2Inch, 5/8Inch, and 3/4Inch counter sink drill bits for all your jobs. Product Material: High Speed Steel material,82-degree tip drills countersink holes into most machinable metals, plywood, softwood, hardwood, fiberglass plastic, mild steel. don't work on stainless. Five-Flute Design: 1/4Inch Hex Shank in 5 sizes,making it easy to select the size and carry it with you. 1/4Inch hex shank counter sink drill bit for wood are fine for all handheld and stationary drills. Widely-Used:The Counter Sinker Drill Set contains 1/4Inch, 3/8Inch, 1/2Inch, 5/8Inch, and 3/4Inch countersink bits that are very commonly used, It is great for drilling holes intoin most workable metals including plywoods, woods, plastics, and mild steel. You can use them for deep machining to achieve precise.<br><br>Color:As Shown Material:High Speed Steel<br><br>Package Contents: 1 * Countersink Drill Bit set<br><br>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.