You are buying silver conductive glue/paste for electronics/circuit board repair. VERY easy to apply. Great for repairing defective traces/tracks or creating smooth jumpers on a PCB (printed circuit board). Can be used for repairing membrane switches. Perfect for both rigid & flexible substrates. Is widely used for home supplies (e.g., refrigerators, drinking fountains, electromagnetic ovens, and electronic kettles), electrical items (e.g., power, inventor, relay, SCR), computer CPUs, LED displays, LCD displays, fiber optic communications equipment, controllers, heat sinks, PCBs (printed circuit boards), LEDs, etc. Package Includes: * 1 x Syringe containing 0.3 ML of Silver Conductive Paste * Two needles of different thickness