Product Description The cambium saver is a useful addition to the arborists equipment bag. The friction saver (as it is also known) is installed in the tree when using DdRT climbing techniques to reduce friction and prevent damage to the cambium of the tree, and also the sheath of the rope. Our TH1180 cambium saver is constructed from 3 layers of heavy duty polyester webbing, with a 60mm diameter steel ring at one end and a 30mm diameter aluminium ring at the other. With a nylon protective cover over the leading edge and finished with distinctive bars of heavy duty stitching these friction saving devices should be an essential part of your climbing gear. Tested and certified to EN795B, rated to 15kN ad individually serial numbered, the TH1180 is available in a variety of standard lengths.