Box of 20 Stipple Shader Bugpin Cartridge Needles from Emalla 

Features:

• Specially designed with 3 groups of 3RL to improve the efficiency of dot shading
  
• Diameter 0.3mm, long taper 5.5mm
  
• Shining blue tip is easy to clean 
  
• Accurate slot design fits 99% of pen machines 
  
• The back blister paper is easy to open 
  
• Cartridge system avoids ink back flowing 
  
• Membrane inside is not easy to pull apart 
  
• Membrane with 4 thickened bars, more durable 
  
• Soft and strong flexible membrane material 
  
• All with CE certificate, sterilised by EO GAS