Rope-Grab Fall Arresters. To be used on twisted rope 14-16mm. diameter. Slide freely on the rope and block at the slightest sign of a fall. Automatic locking upon closure. A control lever allows positioning the product on the rope in a manual way, it becomes then a fantastic tool of positioning or restraint. Body in high strength bichromate steel. With 28cm. extension strap & self locking karabiner (18mm. opening). CE EN353-2.