Material: The needle core is made of high-hardness alloy tungsten steel. Only Suitable SFX pneumatic marking machine.

Applicable material: 

3mm is suitable for marking parts and other accessories.

4mm is suitable for marking high hardness materials such as steel parts and iron parts.

Equipment characteristics:

The advantage of pneumatic marking is that the marking can be deep or shallow, whether it is graphics, text, product, and serial number.