Split band clamps to magazine tube or barrel. Sets to fit Marlin lever actions and many shotguns. Includes 1" Super Swivels. ??? Wood screw rear base also provided. Includes 1" Super Swivels. ??? SGW-12 fits .775" (19.7mm) to .825" (21mm) dia.
Big Book Catalog, Issue:73, Page:252
Big Book Catalog, Issue:73, Page:253