Burs for crown prep

[chocobo]

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I was wondering what burs people were using for axial walls of a crown prep (chamfer).

I'm currently using the following:
 8850 012 ? interproximal axial wall
 878K 014 ? axial wall

Do you guys know of a diamond bur similar to 8850 012 but with a slightly larger diameter? I think the 8850 012 is too small sometimes.

 

[chocobo]

I'm bumping this in hopes that someone can help me out.