These Countersink Drill Bits are beautifully machined to achieve exact countersink holes fit for 90-degree flat heads screws; allows the screw heads to be flush and even with the surface of the material being utilized
M2 high speed steel countersink bit with high hardness enables long drilling life and efficient drilling performance.
HIGH DURABILITY - This countersink drill bit set is proudly made of M2 High Speed Steel with excellent hardness of HRC 62-64; it offers superior cutting power, high durability, and good abrasion resistance
VERSATILE USE: The countersink bits are ideal for bench drill, hand drill (Not recommended), and a conventional electric drill, perfect for Metal wood, fiberboard, particleboard, plywood, plastic, PVC, rubber, etc.
The countersink drill bit set is made of industrial grade steel . Durability & Long service life. And we offer a free exchange/refund service within 45 days after purchase. Please feel free to contact us if you have any issues with the product.