Park Tool PRS-4W-2 Professional Wall Mount Stand and 100-3D Clamp: SingleDesigned to be easily mounted to any post or wall stud, the PRS 4 is a shop quality stand. Features the 100 3D Micro Adjustable clamp with cam actuated adjustment system for quick entry, adjustment and exit Narrow clamping jaws 2. 7" (7cm) designed to clamp securely yet fit into tight areas or on short seat posts Fully adjustable clamping pressure prevents damage to thin walled tubes Places the clamp approximately 13" from the wall Features powder