The Leupold 120180: Mark 4 rings are designed with robustness and precision in mind. These rings feature a cross-slot design that provides superior integrity and tighter tolerances. They not only coordinate well with Leupold PRW bases but also fit seamlessly with any Picatinny-style mount rails. The ring set is characterized by its elegant matte black finish that adds to its resilience. It is crafted from aircraft-grade aluminum, promising durability and longevity. The rings come with a ring diameter of 35mm and are High mount in height, ensuring a fit that\'s both secure and comfortable.