1.13pcs Drill Bits Include: 1pcs of each size( 1/17', 7/89', 6/61', 11/93', 12/95', 4/29', 14/89', 14/79', 17/90', 13/66', 21/97', 17/72') drilling dia M35 straight hex shank twist drills, can accommodate a wide range of drilling needs. 2.M35 Twist Drill Bit: Made from M35 cobalt material which has the characteristic of high hardness and durability. The cobalt material gives the bit superior wear resistance and overall toughness, making it great for long-term use in a variety of drilling applications. 3.Quick and Clean Drilling: The external point angle design of this cobalt twist drill bit allows for fast and efficient drilling, with effective chip removal to prevent clogging, perfect for a range of materials including metal, wood, and plastic. 4.Wide Applications: This cobalt twist drill bit is suitable for a variety of drilling applications, including metalworking, woodworking, and plastic fabrication. It is great for use with harder materials such as stainless steel, titanium, cast iron, malleable iron, and other alloys, wood, and plastic, and is well-suited for both DIY and professional use. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.