Top Mount Rings - 1'''' Low, Matte Blue

Heights: Low and Medium for scopes w/objective diameters to approximately 1.75''''(44.45mm). High for objectives above 1.75''''. Extra High for scopes with objectives up to 60mm. Mfg: Weaver SPECS: Aluminum lower; steel cap, screws, crossbolt and nut. Satin Blue, Matte Blue or brushed Stainless finish. Height (above base): 1'''' diameter - Low, .090'''' (2.28mm); Med., .164'''' (4.16mm); High, .332'''' (8.43mm); X-High, .560'''' (14.2mm). 30mm diameter - Low, .290'''' (7.3mm); High, .485'''' (12mm