Tasco Dual Purpose 1" to 30mm Reducing Rings Low, Clam E/F - Matte Black SPECIFICATIONS BRAND: TASCO CA PROP 65: YES CA PROP 65 CHEMICAL: LEAD MATERIAL: ALUMINUM RING & MOUNT FINISH: MATTE RING & MOUNT PIECES: 2-PIECE RING & MOUNT RING HEIGHT: LOW RING & MOUNT TYPE: WEAVER STYLE DESCRIPTION The Tasco 1 inch-to-30mm rings are rock-solid, and designed specifically for all types of modern rifles. They are engineered to handle heavy recoil, and are secured with four bolt cap screws. They can accommodate scopes with 1-inch or 30mm tubes, and are available in low, medium and high models to fit an array of platforms. Finish: Matte Specifications: Removable 1” aluminum insert Model: TS00601 Additional Info: Angle-Loc clamping system Description: T15 torx screws, 1/2” slotted cross bolt nut