Sako Tikka Optilock Rings 30mm High Blue. OPTILOCK scope mount rings come clamshell-packed in pairs. Hex key included. Sako Tikka OPTILOCK Scope Mount Rings are available in two diameters and three heights and fit both Sako and Tikka rifles. Low and medium rings are also available in stainless steel. OPTILOCK scope mount rings feature a patented spherical fastening ring which makes scope mounting considerably easier. This protective sleeve also ensures that the scope body will not be scratched or damaged during mounting. Select your rings based upon your Type tube dia. (1' or 30mm) (measurement d) and then by the Objective lens outer max diameter. Specifications for Sako Tikka Optilock Rings 30mm High: Manufacturer: Sako Finish: Matte Ring Height: High Ring Quantity: Pair Ring Type: Ring Set Last Chance: Yes Package Contents: Sako Tikka Optilock Rings 30mm High Sako S1300930: Tikka Optilock Rings 30mm High