Low Profile Replacement Foot for Nikon Lenses. The Wimberley AP-501 Lens Foot serves as a dependable replacement or spare for the stock foot of a Nikon lens. Precision-crafted, this foot effortlessly fits into arca-swiss style quick-release clamps. Provided with 1/4" and 3/8" holes for tripod head and monopod attachment. This replacement foot shares the lens plates dual safety stops, preventing accidental slips of the attached device.