An ORIGINAL FROG MECHANISM for Winchester No. 3011 heavy jack plane by the Winchester Repeating Arms Company, New Haven, Connecticut. This frog came from a Winchester No. 3011, which was the Winchester equivalent of the Stanley No. 5 1/2 heavy jack plane and the Sargent No. 18, both of which, as does this plane, use a 2 1/4" width cutting iron. Length = 7.25 Inches (Ref. Id No.: 472360) [Free Shipping]