The Busch® Burs - Twist Drills, Fig. 77 - 1.40mm (ISO #014) offer unmatched precision and durability, making them an essential tool for professional jewelers and artisans. Our Busch® Fig. 77 Twist Drills measure 1.40mm (0.0472") and are made of tungsten vanadium steel for exceptional strength and a long-lasting edge. The precision-machined, uniformly spaced flutes ensure accurate and smooth cutting, while the 3/32" shanks, measuring approximately 1.75" long, are compatible with most rotary tools like flex shafts and Dremels.

For optimal performance, use a cutting lubricant, such as Lube-Stik, to facilitate smooth drilling and extend tool life. The recommended speed range is 1,400 - 10,000 rpm; consult ANSI guidelines for precise speed recommendations. These burs, made in Germany, are crafted to deliver flawless finishes, whether used for detailed jewelry work or repairs.

Designed for accuracy and efficiency, Busch® Twist Drills Fig. 77 elevate your craftsmanship by reducing material damage and ensuring consistent results. Add this Pkg. of 6 twist drills to your toolkit and experience professional-grade performance.