6 Pcs Countersink Drill Bit - HSS
. Material : High Carbon Steel
. Size : 1/4, 5/16, 3/8, 1/2, 5/8, 3/4
. For  : Aluminium, Wood, Plastic
. Cutting : 5 Flute 90˚
. Code : CS6
. A set of 90-degree countersink drill bits commonly used for chamfering and deburring wood.
. Design: These bits feature a 3-flute design to help reduce clogging and improve clearance for smoother, chatter-free cuts.
. Sizes : The set includes multiple sizes, ranging from larger diameters like 20.5mm down to smaller options such as 10mm and 3.5mm.
. Coating : The gold-colored coating is likely Titanium Nitride (TiN), which helps increase the hardness and heat resistance of the tools.