T&T needle cartridges belong to single-use medical products. Each cartridge has a standard twist lock mechanism, compatible with all conventional tattoo machine grips. It securely locks the cartridge in place for safe tattooing. The bugpin round liner configurations are available with 3, 5, 7, 9 and 14 needle points. T&T bugpin round liners are configured in a perfectly round shape and are manufactured with long tapers to keep some tightness between the needle points. These liners are 0.30mm（#10） in diameter and are used a lot for lining, dot work, and filling out details.
DOWNWARD FORCE - Patent of Mechanics Design Formation. Keep the needle pressed against the bottom of the needle's mouth.
ULTRA INK STORAGE- Greatly increases the ink storage capacity to ensure smoother and longer ink flow time.
HIGH QUALITY- Safety 316-grade medical-use stainless steel and medical-grade plastic.
EASY TO USE - Each tattoo needle has a standard knob lock mechanism, which is suitable for all traditional tattoo machine grips.
ANTI-BACKFLOW- There is an anti-backflow system inside the cartridge. Effectively prevents ink from contaminating the tattoo machine.