... 2.5mm Hair Extension Tools/SILICON Micro RingMicro Ring,Micro Link,Extension TubeAluminium micro ring with good quality which be ... market.1)Materials:Cooper Micro ring,Aluminum Micro ring with screw or without screw,Silicone Micro ring2)Function:Protect the ... available(You could see the color ring for the micro ring)4)Size:3.00mm,3.50mm,4. ... and fast delivery! Hair Extension Tools/Silicon Micro Ring