4-edge Countersink Drill Bit

The 4-edge Countersink Drill Bit is our high-performance answer to the needs of modern cabinet makers and renovation contractors. By utilizing a 6542 steel four-edge cutter head, we have significantly increased the cutting speed and the smoothness of the countersink hole compared to traditional 2-edge versions. This tool is designed for the "thousand-hole" challenge; our heat-treated blades are engineered to stay sharp for over 1,000 cycles without significant wear. The integrated aluminum alloy limit body provides a durable, non-corrosive depth stop that ensures every screw head sits perfectly flush or at the desired depth for plugging.

Manufacturing excellence is at the heart of our facility in Yueqing. We produce the 4-edge Countersink Drill Bit using a "closed-loop" production model, ensuring that every component-from the aluminum limit ring to the 6542 steel bit-meets our strict quality standards. We offer this tool in a variety of kit configurations, including our popular 5-piece professional set. For international partners, we provide full OEM/ODM support, allowing you to customize the laser-etched depth scales and packaging to suit your brand's specific aesthetic and functional requirements.