How to choose the right blade for microblading?

There are a lot of different blades for microblading. To get the best results it is important to choose the right blade. 

A microblading blade consists of thin slanted needles placed closely together, to create the blade. The base of the blades can be hard or flexible. The blades go from 7 pins to 21 but the most popular is the slanted hard or Flexi 12 or 14 needles. The Flexi needles have a plastic cover and the hard blades have a stainless-steel cover. The Flexi blades may be harder to control for beginners as they are not as stable as the hard blades. Hard blades are easier to control. 

Note: When creating on a petite brow it is best to use a smaller pin blade ie 7 as you are working on a smaller surface area; again when you are creating a thicker brow a 12 – 14 pin blade is more suitable as you are working on a larger surface area.

U Blades	These blades are best for drawing curvy hairs. They are recommended for more experienced artists. They come in different sizes anywhere from 16-21 pins.
7-pin Slanted Flexi/hard	This is the smallest blade of all. It is used to create thin petite brows, and detailed work when working on a small surface area and creating short hair strokes.
12-pin Slanted Flexi/hard	This is the most common blade used in microblading. It is a medium-length blade, and excellent for creating medium to thick brows.
14-pin Slanted Flexi/hard	This blade is good for thicker brows and to create longer hair strokes, as the blade will work on a larger surface area.
Double Shaders	These shaders are flat and are used to create a light shading effect, commonly used in creating a combination brow.
Round Shaders	Round shaders are round and are used to create a whole combo brow (manual shading) brow effect.