All six 1/2 oz bottles of Shur Lube. The most popular R/C lube on the market. Highly refined silicone r/c lubricant. Excellent on diffs, damper tubes, king pins, front ends or elsewhere on your car. Shur Lube bottles are color coded and numbered one thru six to make it easier to identify the right choice for your setup. #1 is the thinest. #6 is the thickest. The original colored lube....