I believe the Dremel numbers are 7134 or 7144 and 7104. But, if theres a Princess Auto in your area, I picked up 30 diamond coated bits for $5. At $15 a piece for Dremel bits, you're getting 15 times the bits at 1/7th of the cost (after tax). They worked great for me. Did 2-1 inch holes and theyre as good as new. HTH.
Sean
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