For optics with an outside diameter of 1.2 to 1.4 inches.
For optics with an outside diameter of 1.4 to 1.6 inches.
For optics with an outside diameter of 1.6 to 1.8 inches.
For optics with an outside diameter of 1.8 to 2.2 inches.
For optics with an outside diameter of 2.2 to 2.4 inches.