Comments about Manfrotto (distributed by Bogen) Manfrotto (Distributed by Bogen) Mounting Adapter, 3/8" Female Thread to 1/4"x20 Male Thread, 20mm Long. (#3358):
This little jewel isn't much but it saved me having to have one made. I used it to adapt a hook to the bottom of my manfrotto tripod to attach some weight to add to the stability.