Our 4mm Micro Rings are high quality, made from aluminum and are lined with a small seal of silicone inside. These micro rings can be used for stick tip extensions or for a micro ring weft fitting, or even LA Weave application. The silicone lining is perfect for gripping onto the natural hair and the size of the ring means it is very discrete and comfortable. Recommended for use with our 0.5 i-tip strands only. Pack Size: Approx 100 rings per pack.