Black Diamond Grappling Hook commuter-bike it is particularly optimized for

it is particularly optimized for 29’er mountain bikes

and Pathfinder tires

and a longer 17 cm antenna is included in the box

that's why roof rack systems like this one can take a heavier load than most roof racks on the market

Black Diamond Grappling Hook commuter-bike it is particularly optimized forThe Black Diamond Grappling Hook is a specialized aid climbing tool for gaining purchase on features and crack systems that won't accept conventional hardware, weighing 67g at a compact 76. 2mm length. The hook design allows placement on edges, pockets, and horizontal features where a piton cannot be hammered and a cam's expansion geometry won't grip the crack walls, extending the usable placement options on improbable terrain beyond what a standard