Benchmade 928S Osborne Proxy Flipper Framelock Knife Tan G-10 Satin Serrated Edge Knife. The 928 Proxy, a Warren Osborne designed flipper knife, is set to create a huge wave of excitement. It features a Monolock titanium handle with a desert tan G-10 wrap-around milled scale. The new 928S Proxy has a serrated stainless CPM-20CV steel blade. It has a flipper opener that offers reliable performance in tandem with thrust bearing washers and an adjustable lock face for improved longevity. The Proxy folding knife is set up with a reversible tip-up carry pocket clip.