Spearhead High Speed Steel 90 Degree Bearing Bur Master Kit of 33 Pieces Thomas Mann The bowl is filled with

The bowl is filled with black pitch that softens when heated

Use refractive index liquid between the stone and prism to ensure proper optical contact

Correct sizing begins at the front counter

Whether you are shaping large pendants

powered by Badeco RS2000 micromotor Stroke Length 1mm Speed Range 500–5000 strokes per minute Length 145mm (5-3/4") when attached to Badeco RS2000 micromotor Weight 75 grams Sound Level 30 decibels Maintenance No oiling required What's Included

Spearhead High Speed Steel 90 Degree Bearing Bur Master Kit of 33 Pieces Thomas Mann The bowl is filled withImportant Notice: This set will ship incomplete. Due to ongoing supply constraints, Spearhead has been unable to fulfill all sizes in this kit as ordered. Otto Frei will contact you with the exact burs in stock, the sizes unavailable, and an updated reduced kit price at the time of your order. We are not back ordering missing sizes, as restocking timelines are unknown and inventory returns randomly. For reference, as of 7 29 2026, 25 of the 33 sizes