PACKAGE INCLUDE: 16 PCS glue gun sticks. SIZE:7.2mm*100mm. Recommended temperature: 180 ～ 210 ℃. COLOR:Black, Dark Brown and Yellow, three colors can be selected,you can select the color depending on person's hair color. Application:The glue gun sticks can be used with Hair Extension Glue Gun & pre-bonding Hair Extension,i-tips hair extension. TIPS: 1.Please warm up the glue gun for 3-5 minutes before using the glue stick. 2.Keep the surface of the hot-melt adhesive bond clean to prevent impurities from blocking the nozzle. 3.When the glue gun is not in using, please stand upright on the table, and do not lay it flat, otherwise it will cause the glue pouring phenomenon.