There are two main types of needles for The Threads: Sharp Needle and Blunt Needle. The blunt neeedle can also be devided in to Blunt-L Needle and Blunt-W Needle.

The main difference between a blunt needle and a sharp needle is the very top of a needle. 

Sharp Needle:
For a sharp needle the top is beveled, and is very sharp like a knife. It is a basic type, generally used for linear filling and simple lifting, beginners can also operate effortlessly.


For a blunt needle, the top is round.
Blunt-L Needle is improved on the basic of sharp needle to reduce  vascular injury, bruising and bematoma. The pain is significantly lightened.


Blunt-W Needle, the top is made into a circular state, which may reduce the damage to the skin tissue. After needling, we could take out the needle, or correct the position and depth of needling, which perfects the shortcomings of one needling stereotyping of other types.


Generally, the sharp needles could pierce the skin directly, while, blunt needles could not pierce the skin directly and require skin incision.

When injected into the face or other parts of the body, the blunt needles will not damage the blood vessels, so there won't be any risk vascular embolism during the injection process. 
While, it is possible for a sharp needle. That is to say, for the areas with relatively rich blood vessels need to be injected with blunt needles. Fot the parts with relatively few blood vessels may be injected with sharp needles, this can achieve a very safe and protective effect.

The needle sizes we have 28G, 27G, 26G, 25G, 23G, 22G, 21G, 20G, 19G, 18G. The larger the figures in front of letter "G", the thinner the needle will be, which means the less injury and pain for the patients.