aluminum hair extension rings with soft silicone lining, sold as a practical pack of 500 pieces in one bottle. Designed for comfortable, discreet and secure micro ring or Itip hair extensions. Silicone lining cushions the scalp for client comfort while the aluminum shell provides a tight, slipresistant hold after crimping. Key benefits Comfortable and discreet: soft silicone lining reduces pressure at the attachment point for a more comfortable, less visible result. Secure hold: aluminum rings crimp tightly around the hair; silicone lining helps prevent slipping and protects hair strands. Ready quantity: 500 pieces per bottle, convenient for salon use, multiple clients, or athome maintenance. Color selection: five natural shades to match a range of hair colors and improve blending. Specifications Condition: Item type: Hair extension rings Material: Aluminum and silicone Inner diameter: Approx. 0.3 cm / 0.12 inch Outer diameter: Approx. 0.5 cm / 0.2 inch Height: Approx. 0.3 cm / 0.12 inch Bottle size: Approx. 3.7 x 6.7 cm / 1.5 x 2.6 inch Color options: Black, Dark Brown, Brown, Light Brown, Blonde Package weight: Approx. 58 g Package includes: 1 bottle containing 500 pieces Typical applications Salon installations: use for micro ring or Itip extensions when fitting human hair extensions for clients. Repairs and maintenance: keep a bottle on hand for reattachment, tightening, or replacement of slipped rings. Training and practice: suitable for student stylists practicing micro ring application or for preparing extension kits. Notes Please allow 1 to 2 mm variation due to manual measurement. Colors shown on monitors may vary slightly from the actual product. Use the physical item as the color reference. This product is intended for use with human hair extensions and standard hair extension pliers for crimping.