Swiss Fig. 156C Hart 90 Degree Burs .50mm-3.70mm Crucible Re-lubricate per Foredom's recommended maintenance

Re-lubricate per Foredom's recommended maintenance interval or whenever operation feels dry or rough

while the reverse side shows French sizes 1–36 with circumference graduations in millimeters

making it a ready-to-use solution for jewelers

Suitable for non-precision applications such as screw posts and screw ear nuts

The clear storage case features a center ridge designed to hold a single sieve in place during use

Swiss Fig. 156C Hart 90 Degree Burs .50mm-3.70mm Crucible Re-lubricate per Foredom's recommended maintenanceThe Swiss Fig. 156C Hart (Heart) 90 Degree Burs are precision ground tungsten vanadium burs manufactured by Dentsply Maillefer of Switzerland. Designed for professional jewelers and metalsmiths, these 90 degree hart burs deliver consistent, accurate cuts across a wide range of metalworking applications. Available in 27 sizes ranging from 0. 50 mm to 3. 70 mm, they are a top selling choice at Otto Freipreferred by many professionals over higher priced