This brilliant device works on all dynamic single ropes from 8.9 – 11mm, but is optimised for 9.4 – 10.3mm ropes. The unique design feature of the Grigri is its assisted braking, giving confidence to beginners & experienced climbers alike. The Grigri 2 has a new design that improves control on descents, eliminating rope jam & sudden release to allow a very gradual release of the rope especially when abseiling or lowering a partner. The Grigri 2 is 25% smaller & 20% lighter than the original. Belay technique identical to classic belay systems: both hands on the rope. A fall is stopped by tightening the hand on the free end of the rope Assisted braking: during fall arrest, the belayer holds the free end of the rope, the cam pivots & pinches the rope, increasing the braking action until the rope stops sliding The GRIGRI 2 has a new design that allows excellent control during the descent. One hand holds the rope & the other uses the handle to unlock the cam. The patented handle design allows a very gradual release of the rope. In combination with the strong braking action of the cam, it gives a great feeling of security when lowering a partner or rappelling The GRIGRI 2 is compact & ultra-light at 185 g (25 % smaller & 20 % lighter than the GRIGRI) Built with a stainless steel friction plate & cam to ensure a long life for the product For 8.9 to 11 mm single ropes (optimised for 9.4 mm to 10.3 mm ropes) Diagrams for rope installation engraved on belay device (interior & exterior)