... These fit all standard tattoo machines Made from stainless steel 12 sharps Each needle is pre-sterile with E.O. gas ... )size: 1, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18Round shader (RS)size: 3, 4, 5, 7 ... , 8, 9, 10, 11 13, 14, 15, 18Flat shader (F)size: 4, 5, 6, 7 ... , 8, 9, 11, 13, 15Single Stack Magnum(M1)size:5, 7, 9, 11 ...