Whether you're making repairs or buildingyour own electronics from scratch、 this Professional Thermal Heat-Sink Compoundwith Injection Tube is the perfect choice for use on any heat sink. The thermalgrease has a high conductivity rating of greater than 4.5W/m-k、 and it remainsvery stable、 even at very high temperatures. Use it to fill in gaps that couldreduce the performance of the heat-sink、 and you'll benefit from its low bleed、which allows for very precise application. The silicone fluid comes in aninjection tube syringe to ensure ease of use. You'll receive 10 of the 1-gramtubes per order.