Tapered Wedges for crack security.
The original Rock was developed by Mark Vallance two decades ago. It has been subject to considerable revision since and now stands as another fine example of classic Wild Country Engineering.
The unique shape is engineered to take up the most stable position in any crack, the convex side locking firmly 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. Smoothly machined edges and corners, together with the use of carefully selected 6064 T6 aluminum extrusions ensure Rocks 'bed' easily into cracks, and can be easily 'cleaned'. From size 4 upwards, the next size can be obtained simply by turning the Rock through 90°.
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