Needle:3 pinPinhole Diameter:0.21mmNeedle Length:0.6mm Core advantages- High efficiency absorption:reduce liquid leakage and improve the utilization rate of ingredients;- Flexible customization:Ingredients can be freely matched to solve multiple skin problems.- Precise layering:Customized injection schemes for different depths such as epidermis and dermis; Ship from Hebron, Kentucky, United StatesTo United States: by USPS - First Class Package (Standard 3-5 Business Days)if heavier then 453g(1 lbs): by USPS - Priority Mail (Express 2-3 Business Days)