Thatch that! When your Dethatcher Joe?s scarifier power slows, it?s time to replace the tines to get your Dethatcher Joe back in top raking form. The replacement cylinder features10 steel blades, each 2 mm thick, that stay sharp longer to provide maximum scarring performance. Installation requires just a few simple steps. In no time at all, you?ll be back to scarifying 14-inch wide x 0.5-inch deep paths, which will help keep your lawn green and healthy all season long.