TOOL 755-5 Flex Arm Ver II O-RingSKU45105347550560OverviewEliminates unpleasant net sagging when using Flex Arm/Flex Arm Ver.?! When trapped, it will automatically come off when the flex arm moves. (Invented by Kazuo Kato)FeaturesBrandTOOLUS $1.35 US $0 4510534755056Customer reviews and ratingsBe the first to write a review of this product!