This contains two individually wrapped blocks of paste. One Red Medium Grit and one Black Fine Grit. 

These pastes must be used on separate leather strops so that they do not contaminate or mix grades. The red is the coarser of the two and the finer coarse black used for polishing the edge.

Stropping pastes are best used when your razor has just started to go dull, and just need a little touching up. Using them will help you maintain a shave ready razor longer without needing to get them honed.