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9 sizes · WERTEC

BLUE Fine-Grit Diamond Core Bits M14 for Porcelain

M14 core bits with finer diamond grit for a cleaner hole edge – including the 50 mm bit with 70 mm recess for sink waste pipes.

  • Finer diamond grit – more accurate hole edge
  • Vacuum-brazed above 1000 °C
  • M14 thread, 10,000–14,000 rpm

Available through WERTEC distributors. Send an enquiry – we will tell you where to buy in your country.

BLUE core bits drill holes in porcelain stoneware, wall tiles, terracotta and ceramic tiles with an M14 angle grinder. The finer BLUE diamond grit gives a more even hole edge that does not crack at the rim.

Vacuum brazing above 1000 °C fixes the diamonds firmly. WTC5070 is a 50 mm bit with a 70 mm recess – for the sink or basin waste pipe.

Sizes and codes

CodeDiameterEAN
WTC066 mm5901721736221
WTC088 mm5901721736238
WTC1010 mm5901721736245
WTC1212 mm5901721736252
WTC2525 mm5901721736269
WTC3232 mm5901721736276
WTC3535 mm5901721736283
WTC507050 mm, 70 mm recess (sink waste)5901721736313
WTC6565 mm5901721736290

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