FEATURES:-ForHowa/Vanguard long action-Precision CNC machined from 7075/T6 aluminum for a high strength & lightweight platform-Mil-Spec hardcoat anodized finish for abrasion and corrosion resistance-Bases feature black zinc coated hardware for "Element Proof" protection-Self centering tapered T-15 Torx screws-Fits Picatinny & Weaver style mounts and are NATO-STANAG compatiblePRODUCT SPECIFICATIONS:Dimension 0.80 X 3.55 X 8.70Height 0.8000Width 3.5500Length 8.7000STYLE PICATINNYFINISH BLACK MATTEMATERIAL ALUM ALLOYTYPE OF RINGS NEEDED MIL-STD 1913 PICATINNYRINGS INCLUDED NOTHER FEATURES: FITS HOWA 1500, WEATHERBY VANGUARD, LONG ACTION, MADE IN USA