I bought these beads for my small watercolor and tattoo ink bottles and added one to each bottle (after sterilizing with isopropyl alcohol). They make shaking the ink a lot faster! And best of all, they're made of stainless steel, so they won't corrode or react with ink (you don't want rust in your bloodstream!).
Happybuy Actuator Mounting Brackets - Enhanced Load-Bearing Capacity
3 Review
Stens 150 260 Recoil Starter Assembly: Efficient and Reliable for Easy Start-ups
3 Review
π Enhance Efficiency and Safety with the Mophorn Transformer Voltage Automatic Regulator
3 Review
Stens 285 556 Caster Yoke
3 Review