The fimblSAVER features several technological novelties and is one of the smoothest friction savers on the market. The two stainless steel thimbles of the fimblSAVER ensure that the climbing rope will run smoothly during work in the canopy. The 10 cm long and tapering longitudinal seam makes pulling the cambium saver off easy. The 17 mm wide support surface is essential in protecting the bark. It is very easy to install from the ground.