This is a tube of Mobil 1 grease from GMK Supply. The Mobil 1 grease is a super high quality 100% synthetic product used by top 1:1 race teams. People like Bobby Tillman of Team Mugen use Mobil 1 grease to lube the outdrives of their diffs to prevent leakage and keep the o-rings in great shape. Also perfect for ring and pinions and CVDs and bearings. The syringe applicator makes it easy to apply in small beads and keeps the grease clean (no dirty screwdrivers into a grease container...).