Spearhead High Speed Steel Bud Bur Master Kit of 23 Pieces Surface Treatments 1080 Adjustable Reciprocating Hammer Micromotor

1080 Adjustable Reciprocating Hammer Micromotor Kit combines precision control and power for stone setting

Hole sizes range from 9 mm × 9 mm (smallest) to 12 mm × 12 mm (largest)

All carat weights are stated in diamond weights

Nylon collets help protect finished ring surfaces during work

Optional accessories: Caster Kit AA037

Spearhead High Speed Steel Bud Bur Master Kit of 23 Pieces Surface Treatments 1080 Adjustable Reciprocating Hammer MicromotorImportant 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 23 sizes