Ink Caps
The True Tattoo Ink Caps feature a wide flat bottom base that prevents ink spillage so no need for ink cap holders or ointment piles to hold your caps up. True Tattoo Ink Caps are available in a variety of three sizes in clear for best ink visibility! 
 
https://store.truetubes.com/collections/ink-caps/products/ink-caps-clear-bag-of-1000
Clear color, and available in a clear bag

Small (10mm), 
Medium (13mm)Large (18mm)
 

10mm - Small - 1000

13mm - Medium - 1000

18mm - Large - 500