Swiss Fig. 77B Cup Burs .90mm-3.50mm Bur Size:1.50mm Blade locking mechanism supports both

Blade locking mechanism supports both right- and left-handed use

In reverse

featuring a 3-jaw #0 Jacob-style chuck that opens up to 5/32"

Standard 1/4" Fitting – Fits many common jewelry and watch steamer configurations

Improves metal fluidity during casting

Swiss Fig. 77B Cup Burs .90mm-3.50mm Bur Size:1.50mm Blade locking mechanism supports bothSwiss Fig. 77B Cup Burs are crafted from tungsten vanadium steel by Dentsply Maillefer of Switzerland, one of the most trusted names in precision bur manufacturing. These cup burs are a perennial favorite among professional jewelers, offering consistent performance and reliable quality at an excellent valuemaking them the most popular burs carried by Otto Frei. Available in 14 sizes ranging from 0. 90mm to 3. 50mm, they are sold in multiples of 6.