Bellecode 7-star Prime Remy I-Tip micro ring hair extensions. No heat or glue required — strands are secured using small metal micro rings. Quality: 7-star Prime Remy human hair Bond: I-Tip (stick tip) for micro ring application Weight: 0.8-1g per strand, 25 strands per pack Lengths: 14" to 26" I-Tip extensions are a heat-free, glue-free method. The strands are threaded through small silicone-lined micro rings and clamped in place. Gentle on natural hair.