Skull Ink Caps by Saferly.

These ink caps are size #16 (~16mm) and can store a large amount of your tattoo ink for your next session. 

• Head-shaped ink caps
• Polypropylene plastic
• Size: #16 (Large); ~16mm
  
• Cutie Doll - designed ink caps
• Made by Saferly
• Sold as one bag of 200