There is always a way to make good things even better. In its fourth version the Cocoon redirect pulley with its two high quality SKF ball bearings keeps doing an amazing job as part of the personal protection equipment. The Cocoon 4 just adds even more convincing details. All advantages of the Cocoon 3 remain but are enhanced by the smoothly rounded cap nut known from the very original Cocoon 1. Installation remains ingeniously simple. Changes were added to the axial bearing, its technical finesse now being completely housed in the smooth, sunk stainless steel bolt. For interested climbers the sophisticated inside of the Cocoon 4 can be seen in animated 3D on www.climb-ART.de. The Cocoon 4 is used with textile ropes according to EN 1891 with a diameter up to 14 mm. Smallest redirect diameter 30 mm. Ten year duration of use.