What is the difference between a liner and a shader tattoo needle

A liner tattoo needle is designed to create clean and precise lines in a tattoo, whereas a shader tattoo needle is designed to fill in larger areas with shading and color. Liner needles have fewer needles tightly packed together to create a thin and sharp line, while shader needles have more needles spaced farther apart to create a softer and smoother effect. The types of needle formations can also differ between liner and shader needles, with liners usually having a round formation and shaders having a flat or magnum formation.