1" Extra High Rings are Steel Construction with Nitrite Finish,  4 #6-48 x .40 Torx Head Top Screws Designed to withstand the recoil of a 50cal.  Rings are Designed to mount on Standard Dovetail or Picatinny Style Rails.  Held in place with 1/2" nut.  Centerline of the scope ring to the top of the base is 1.206".  

Using the INCH POUND torque wrench, tighten the screws to 15 to 18 INCH POUNDS moving from one screw to the screw in the opposite corner. If you are using the standard wrench, tighten the screws by moving the wrench 90 degrees maximum and proceeding from one corner to the opposite corner.

The ring nuts may now be tightened with a torque wrench to 60 to 65 INCH POUNDS of torque or with a standard ½ “ wrench tighten an additional 90 degrees maximum.