Weaver Top Mount Base Number 63BS - 48447 Top mount aluminum base. Length: 4.7 inches; width: .370 inches Each base is machined to tight tolerances for a custom fit. Aluminum bases offer maximum strength for rings to hold tight Fits Marlin 9, 45, 30AW/AS, 36, 62, 93, 336 (all Models), 375, 444, 1893, 1894, 1895, Glenfield 30, Zane Grey, Camp 9 922m, 989 Mounting Screws Included.
