Best Seller | Wimberley Replacement Foot for Nikon 400mm f2.8 and 600mm f/4.0 AF-S AP-452 Authorized Wimberley USA Dealer! Read 38.00 User Reviews on the Replacement. Buy today fro... This Wimberley Replacement Foot for Nikon 400mm f2.8 and 600mm f/4.0 AF-S takes the place of the tripod collar foot and converts the collar to Arca-style clamp capability without the need for additional quick release plates. Critical mass is reduced &... more | | $79.00 FREE shipping go to store |