1.Material:Aluminum,Copper and Natural Silicone
2. Size:Outside Diameter:3.2mm
Inside Diameter:2.8mm
Length: 4.5mm/5.0mm
We can make it as your own size also
3.Color Availavle:Black #1,Dark Brown #3,Brown #5,Light Brown #8,Ash Blond #11,Blond #13
4. Specialty:No Harm to your hair ,Easy to press and open,Reusable,Strong&Long Lasting Enhancement
5. Package:100pcs/jar ,500pcs/bottle or 1000pcs/bottle
6. Production Ability:100000bottles per month,1000pcs/bottle