These needles are compatible with ROTARY TATTOO machines that accept UNIVERSAL CARTRIDGES such as  Axys Vahalla, Xion, Xion S,  Flux, Bishop, Bellar, Rook Quill, Mast Tour, Mast Magi, Omnia, Flux, Dragonhawk, Bronc.

They will not work with PMU devices such as Slay Bae, Boujee, Black Pearl, 24K, Artmex, Phibrow, Biomaser, Amiea,  Infinity, Biotek, Nouveau Contour, and other proprietary PMU devices.