This 24 Pcs/Lot Yellow Hair Extension Glue Sticks Hot Melt Glue Stick is perfect for hair extensions! Each pack includes 24 pieces of 0.7cm wide and 10cm long glue sticks in a yellow color. It also comes with two packs of colored glue sticks in black and brown. The standard for this glue stick has been tested by SGS and is designed to be used for keratin hair extensions. With NL-102, you can melt both glue grains and glue sticks with ease.