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Rocks
Features:The original Rock design was developed 19 years ago by Mark Vallance and has been refined over the intervening years to create the definitive piece of passive crack protection. The unique shape is engineered to take up the most stable position in any crack, the convex side locking against the two "feet" of the concave side, creating a stable triangulation of forces. Planar side tapers ensure stable side placements and allow you to "turn-key" rocks into pockets. The over-barrelled edges and corners together with the use of carefully selected 6064 T6 aluminium extrusions ensure rocks "bed" into the crack but can be "cleaned" easily. R Rocks on dyneema: Rock sizes 8, 9 and 10 are available with sewn slings made from 12 mm Dyneema tape.They are lighter than the equivalent wired Rock and require only a single karabiner to connect the climbing rope. These weight saving features make them a good choice in the mountains where weight must be kept to a minimum. Sizes: Nominal Size Edge Side Edge Size Width Width Weight Strength Strength mm mm gm kN kN 0 4.4 9.6 6 2 2 1/4 4.9 10.6 6 2 2 1/2 5.6 11.6 10 2 2 3/4 6.9 12.1 10 2 2 1 7.0 13.0 16 7 4 2 8.2 13.8 25 12 4 3 9.6 14.5 28 12 6 4 11.3 15.3 30 12 8 5 13.3 16.8 32 12 8 6 15.6 19.0 36 12 10 7 18.4 21.2 38 12 12 8 21.6 24.0 47 (43) 12 12 9 24.4 27.7 60 (55) 12 12 10 30.0 31.0 71 (67) 12 12
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