Spearhead High Speed Steel 45 Degree Bearing Bur Kit of 24 Pieces Polishing Compound you can switch your Quatro

you can switch your Quatro on or off with a simple press of your foot—keeping your hands free to manage your work

This retrofit kit includes everything needed to complete the swap

the renowned micro diamond setter and tool innovator

When punching a washer

Spearhead High Speed Steel 45 Degree Bearing Bur Kit of 24 Pieces Polishing Compound you can switch your QuatroImportant 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, 15 of the 24 sizes