
The Alpen Diamond Bur #850L-018M is a medium-grit, friction-grip (FG) rotary instrument with a long round-end taper profile, designed for broad restorative contouring and planar refinement of enamel, composite, and ceramic. Its 1.8 mm head diameter and 12 mm working length provide extended reach and a generous cutting surface for shaping crowns, onlays, and large composite restorations with stable, even material removal. The multi-layer natural diamond coating is bonded to the steel shank to reduce vibration and maintain consistent cutting efficiency as outer layers wear and expose fresh diamond edges.
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Sorted by lowest price · Add now, sign in at checkout






The Alpen Diamond Bur #850L-018M is a medium-grit, friction-grip (FG) rotary instrument with a long round-end taper profile, designed for broad restorative contouring and planar refinement of enamel, composite, and ceramic. Its 1.8 mm head diameter and 12 mm working length provide extended reach and a generous cutting surface for shaping crowns, onlays, and large composite restorations with stable, even material removal. The multi-layer natural diamond coating is bonded to the steel shank to reduce vibration and maintain consistent cutting efficiency as outer layers wear and expose fresh diamond edges.
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