1、CONICAL DESIGN: The conical drill bit has a pointed head and wide groove, which can quickly drill clean guide holes to ensure a tight fit with the screws. 2、WIDER GROOVE: A wooden countersunk drill bit with a wider groove shape can increase chip flow. The drill bit is fixed with a safety pin and never comes loose from the handle. 3、EASY TO USE: Premium cemented carbide material for quick opening; Hex socket screws to secure the drill bit. Spray paint coating, beautiful and rust resistant; Hex shank chamfered for easier clamping. 4、FINE WORKMANSHIP: Well crafted in standard size and fine surface, this drill bit is easy to install on the corresponding machine, choose with confidence! 5、EASY STORING: Comes with a storage box, this drill bit is easy to carry and store, do not take up much space, put in your bag, use anytime you want. 1 x Countersink Drill Bit1 x Hex Wrench 1 x Screw 1 x Storage Cartridge Item Type: Countersink Drill BitMaterial: Cemented CarbideSpecification: 1/4 x 2.5