Counterbore Drill Bit Limit Adjustable Fast Chip Removal Countersink Drill Bit Set for Wood Plastic Soft Metal

1、LIMIT ADJUSTABLE: With adjustable limit the drill bit will not pierce wall and has premium punching efficiency use at will! 2、ALLOY STEEL MATERIAL: Made of premium alloy steel material this drill bit is wear resistant and impact resistant ensures a long life span. 3、FAST CHIP REMOVAL: A spiral groove with a central drill bit will quickly discharge debris from the hole effectively prevent the accumulation of retained rock cuttings and improve drilling efficiency. 4、WIDE APPLICATION: This drill bit is suitable for countersinking and drilling of wood plastic soft metal fiberboard aluminum alloy screws etc. 5、EASY CARRYING: The drill bit set is light in weight and with a storage box is easy carrying for convenient use.