Our most popular style of patch. 100% cotton Prelubed patches. Lubed with Ox-Yoke s improved Wonder Lube 1000+. During testing, 1000 consecutive shots were fired in a test rifle using black powder, without cleaning between shots. The rifle loaded safely, easily, and shot accurately, with no rust or corrosion in the bore throughout the test period. These are the most popular pre lubed patches on the market. 100 per bag.