Sierra Trailer Grease Gun Kit 3oz 18-9783 by Sierra International $43.37 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Sierra Trailer Grease Gun Kit 3oz #18-9783 3oz grease cartridge. Includes push-lock plunger. Die-cast T-handle that locks in place for loading. 5-1/2" grease pipe standard duty coupler.