Kwadron Cartridges - Round Liner - Box of 20Kwadron have established a reputation for manufacturing some of the best tattoo needles you can get. The Kwadron Cartridge System is no different: razor sharp, flexible long taper needles, grouped together with the highest possible precision. The Kwadron Cartridges feature a needle stabilising system which ensures optimal performance of your needles. The tips are made from a medical grade plastic, so friction between the needle and tip will be minimal