Universal Relife RL-062B Manual Glue Gun for 30CC~60CC Solder Paste/Solder Oil /UV Adhesive. Manual Single Tube Handle Tool for Pressing Squeezing. The flux in the pictures is for reference only, the actual packaging does not contain any flux!!! Features: Professional industrial integrated casting manufacturing, durable and not easy to wear, meticulous arrangement, smooth use. Ergonomic design, comfortable grip, two needles of different sizes are provided for efficient work. Suitable for 30cc-60cc syringe oil, solder paste, UV solder mask oil, structural adhesive, etc. Complimentary 2 needles of different specifications. How to Use: 1. First push up the buckle at the end of the glue gun, insert the push rod from the front to install it, and push the card slot upward. 2. Align the end of the rubber cylinder with the card slot and press down, lift the buckle and push the push rod into the needle cylinder 3. Remove the barrel seal and install the needle 4. Adjust your suitable holding posture to use Package Includes: 1 x Manual Glue Gun 2 x Needles