What's size of tattoo cartridge?

1. Round tattoo needles
Round tattoo needles are generally used in tattoo cutting lines, including tightening round needles (RL round liner), loose mouth round needles (RS round shader) and hollow round needles (HRL hollow round liner):

1. Tightening round needles (RL) are now commonly used for "cutting lines", mainly for making lines. Commonly used needle types are 1RL, 3RL, 5RL, 7RL, 9RL, 11RL, 14RL, and 18RL. The numbers represent the number of needles. For example, 3RL is 3 needle points, and 9MS is 9 needle points. Different tattoo needles are selected according to the different line thicknesses required for different tattoos. The needle types are arranged from small to large. The larger the line, the thicker the line. The characteristics of tightening round needles are high line saturation and easy to color.
"12" represents the diameter of each tattoo needle. "12" means that the diameter of each needle is 0.35 mm, which is the standard size. The larger the diameter of the tattoo needle, the faster the ink will flow on the needle, and it is easier to color, but the accuracy is not high.

2. Loose-mouth round needles (RS) are generally suitable for small-area fogging and line expansion. For example, when making totems, loose-mouth round needles can be used at the corners. Commonly used needle types include 3RS, 5RS, 7RS, 9RS, 11RS, and 14RS. The characteristic of loose-mouth round needles is that they cause less damage to the skin and can be used for small-area transitions.
3. Hollow round needles (HRL) This needle type is similar to the loose-mouth needle type, but it has a larger ink storage capacity. Commonly used needle types include 7HRL, 9HRL, 11HRL, 13HRL, 15HRL, and 18HRL.
2. Tattoo needles
Tattoo needles are generally used for fogging. Common needle types include single-row needles (F Flat), double-row needles (M2 stacked magnum) and arc needles (RM round magnum):

1.Single-row needles (F): generally composed of 4 to 6 needles, commonly used for small-area coloring and expansion lines and small-area totems, not suitable for large-area skin coloring, commonly used needle types include 4F, 5F, 6F, and 7F.
2. Double-row needles (M2): generally refers to the combination of multiple needles. Compared with single-row needles, double-row needles strengthen the shortcomings of single-row needles M1 (weaved magnum). Because the needles are spread out into needle points, they can pierce the entire color block area more than single-row needles. Commonly used needle types include 9M2, 11M2, 13M2, and 15M2.
3. Curved needle (RM): It is similar to single-row needle, but the top is arranged in a fan shape, which is particularly suitable for fogging and coloring. The only certainty is that it is not suitable for making corners. Commonly used needle types include 5RM, 7RM, 9RM, 11RM, 13RM, 15RM, 17RM, 19RM, 21RM, 23RM, 25RM, 29RM, and 39RM.