Other Details Manufacturer: Warne Manufacturer Part Number: V421M Dimension: 1.20 X 4.70 X 6.40 Finish: BLACK-MATTE Material: Aluminum Mount Type: 3/8" Dovetail Other Features: FITS 3/8 DOVETAIL ONLY Product Type: 3/8" DOVETAIL Style: Rimfire/Vertical Split Tube Diameter: 1" Tube Size: 1"