Diamond drilling & grinding bit

Regular price $6.30
Ball-shaped diamond-coated grinding bit for glass and stone. 3.2mm. For drilling and milling of glass and stone up to granite. Recommended use on drill presses with a speed of 2000 rpm with additional coolant. 3/32” (2.35 mm) shank. 2 bits per pack.

NO 28 234

Returns can only be accepted for unused product in its original packaging. In addition to the returned item / items, a copy of the original packing slip or invoice is required. If proper paperwork is missing, PROXXON Inc. will not issue a credit. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here.

California Residents Prop 65 Information

This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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