Friction savers--also known by other names, including false crotches and cambium savers--are very common today. Arborists are now much more cognizant and careful when it comes to protecting both trees, and the rope they climb on. Proper use of a friction saver will greatly increase the life of your rope, and will also preserve the health of the tree. The Buckingham ArborMaster Friction Saver, with aluminum rings, is the most popular friction saver we offer. You can find it below in three different lengths.