3mm Rounded Chisel for ZPT-TR T-Rex Air Scribe Spares mineral and rock conservation and

mineral and rock conservation and preparation

included air abrasive systems in continuous use

1 spare anvil O-ring

Amazing work can be done with an electric engraver

Box includes: 3mm tungsten carbide point stylus or 3mm tungsten carbide chisel stylus

3mm Rounded Chisel for ZPT-TR T-Rex Air Scribe Spares mineral and rock conservation and3mm rounded chisel stylus (75mm length) to fit ZPT TR T Rex air pen. Manufactured from high grade tungsten carbide. 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