This unique tiny personal ascender device is a perfect aid for rope ascent and any type of pulling rope. It is placed like a ring on the middle finger and provides extra grip and strength during dragging and hauling operations - for highest efficiency. For rope diameters from 8 to 13 mm. The finger slot is equipped with a spring that provides stability while in use. -The spring opens immediately if the finger gets caught. Made of 100 % stainless steel Suitable for rope diameters from 8.0 to 13 mm ART. NO. H-205 EAN 4030281286691 E-CLASS NUMBER 40-02-01-90 MAX. SERVICE LIFE 30 Years AREA OF APPLICATION Arborists, Confined Spaces, Facade / Window Cleaning, Fire brigade / Rescue / Special Forces, Rope Access / Rigging CUSTOMS NO. 84798997 SIZE 18 x 40 x 70 mm WEIGHT 0,05 kg MATERIAL Stainless Steel