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2mm diameter tungsten carbide straight chisel for the ZPT-TB The Trilobite with pusher-plate o-ring and chisel-compatible spring. Manufactured from stone-grade tungsten carbide.

 This chisel will not rotate when in use, due to our locking mechanism. The custom spring acts to hold the chisel in place. 

The straight chisel is most useful for matrix smoothing and working on softer matrix. If used too aggressively, or on matrix that is too hard the edges might spall in use due to the nature of tungsten carbide. If you would rather avoid this, we suggest purchasing the rounded chisel instead!

When you order this stylus, you get:

  • 1 x straight chisel stylus
  • 1 x pusher plate o-ring
  • 1 x chisel-compatible spring

Spare springs are available separately. 

What is tungsten carbide?

Stone-grade tungsten carbide is by far the best material for fossil preparation – it withstands the abrasive nature of rock and stays sharp far longer than other metals like steel which will quickly blunt and wear down to nothing. However, tungsten carbide can be brittle. A stylus can last many years without requiring replacement when looked after correctly.


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