Arkon RMCPMAMPS Robust Clamp Mount with Security Knob – 4-Hole AMPS Compatible (sku 47851)Arkon's RMCPMAMPS Robust Clamp Mount is a highly versatile locking clamp mount with a unique jaw design that has an extra wide clamping range for both flat (including tables, desks, counters, shelves) and tubular (including handlebars, roll bars, wheelchairs, strollers, grocery carts, golf carts) surfaces, including small posts. It is compatible with 4 Hole AMPS holders and adapters (sold separately). This package includes a Robust Clamp Pedestal, a