Large Amber Keratin Bonding Glue Sticks. These sizeable glue keratin sticks come in packs of 12 sticks, and are compatible for the large sized hot glue guns. They are manufactured from exceptional-quality keratin resin. They are ideal for the applications and to adjust/application nail-tip (u-tip) hair extensions and other extensions. The strong keratin formation will lead to the creation of the durable, long lasting with a hard bond. You can remove them easily with help of pliers and acetone solution. Dimensions: 29.5cm length / 12mm diameter. Our glue sticks are also obtainable in Black and Brown (Suggested for use by trained professionals only)