MANUFACTURER: Riton Optics FAMILY: Accessories MODEL: Tactical Ring Set TYPE: Accessory-Rings & Ring Mounts ITEM GROUP: Scope Rings FINISH: Matte FINISH TYPE: Black MAINTUBE SIZE: 30mm WEIGHT: 4.8 oz. SHIPPING WEIGHT: 0.41 lbs. ADDL INFO: Ring Set 10mm ADDL INFO: Fits Picatinny or Weaver Rail MFG MODEL NO: XRC3010T23 UPC: 850041390376