1、Scope of Application: This countersink drill bit is suitable for drilling in most machinable metals, plywood, cork, hardwood, fiberglass plastic, mild steel, etc. 2、5 Flute Design: With five blade design, this countersink drill bit has better vibration damping effect and better chip removal, providing a smoother drilling experience. 3、Carbon Steel Material: Made of carbon steel, this countersink drill bit is strong and sturdy, wear resistance, with a gold oxide surface, corrosion resistance. 4、With Storage Box: Comes with a storage box, you can easily carry this countersink drill bit around to help with your work and achieve better preservation. 5、Depth Adjustable: The working depth of the countersink drill bit is adjustable to meet the needs of different sizes and materials. 1 x Countersink Drill Bit Item Type: Countersink Drill BitMaterial: Carbon Steel, YG6 AlloySize: 3/8 x 3/32 x 1/4inWeight: Approx. 142g/5oz 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.