1、Chip Removal and Bending Strength: This limit taper countersink drill bit is with good chip removal effect, strong bending strength and wear resistance. 2、Precise Processing: Using high accuracy equipment precise processing, this limit tapered countersink drill bit is also with great accuracy. 3、Efficiency Improving: Tapered countersink drill bit will quickly discharge chips from the hole and can effectively prevent the accumulation of rock chip stagnation and improve drilling efficiency. 4、Reasonable Structure: This limit tapered countersink drill bit adopts reasonable structure design, beautiful and durable. 5、Made of Alloy Steel Material: Our limit taper countersink drill bit is made of alloy steel material and with exquisite craftsmanship.