5%Cobalt HSS drill bit 4mm

The Ronix company has designed and manufactured the RH-5509 with the highest quality 5% Cobalt material, a strong high-speed steel twist Drill Bit that ensures the blade's sharpness and longevity to provide a lifetime of high-end performance. Whatever the project, the Ronix RH-5509, 5% Cobalt HSS Drill Bit will accomplish it perfectly. Additionally, the Ronix RH-5509 drill bit is amazingly versatile and with standard dimensions that enable it to fit into any power tool easily.