The High Speed Steel Bur – Size 5 (1.7 mm) Inverted Cone is a precision cutting tool crafted for jewelers, woodworkers, and model makers who demand both finesse and durability. Made from high-speed steel (HSS), this bur maintains sharpness for longer periods, even under high-speed conditions.

Its inverted-cone geometry is perfect for carving detailed contours, shaping curved surfaces, and finishing tight or hard-to-reach areas. The compact 1.7 mm diameter balances control with material removal, making it ideal for delicate metalwork, decorative carving, and finishing tasks.

Thanks to the robust HSS construction, this bur withstands heat buildup and repeated use, offering significant longevity compared to conventional tungsten-vanadium burs. The 3/32" (approx. 2.35 mm) shank ensures broad compatibility with rotary handpieces, micromotors, and flex shaft tools.

Whether you're refining bezels, engraving, removing cast seams, or shaping wax and plastics, this inverted cone bur delivers reliable and consistent results.

Key Benefits:

• Durable high-speed steel for extended cutting life

• Compact 1.7 mm head for highly precise control

• Inverted cone design for clean undercuts and surface shaping

• Heat-resistant performance under high RPM

• Compatible with standard 3/32″ shank rotary tools

• Ideal for carving, finishing, engraving, and shaping metal, wood, or plastic