What is the common use for a Flat & the Magnum needle for Tattoos?

Question

-_-° Call me $t**!d or naive, but this is why yahoo answers exist, so I can get this questions answered. I just need to know, I'm doing a bit of a research on tattoo needles since I'm curious of why so many types of needles?

Answer 1

For different techniques. The flats and the magnums are both for shading. The magnums are interwoven, the flats side by side.