Leupold Cross-Slot mounting systems feature Weaver-style rings that work with both Weaver or Picatinny rails with 1-piece and 2-piece bases available for many popular rifles. This model is designed to fit any riflescope with 1" maintube and is ideal for standard to magnum calibers. Product Specifications Material: Steel Base Cant: No Ring Height Style: Low Ring Diameter: 1 inch Ring Height (in): .73 Weight (oz): 4.3