Warne Maxima Steel Rings 30mm Weaver/Picatinny PA Low - Matte. Maxima series rings are designed to mount on Weaver style and picatinny bases. The finish uses a powder coating process that is used by Zeiss and Nikon on their scopes. The rectangular stainless steel recoil key is unique and has proven reliable under recoil. Warne 30mm PA Low Scope Mount Rings 213G: Warne PA Low Gloss Riflescope 30mm Rings 213M: Warne Mounts 30 Millimeter Permanently Attached Low Matte Rings 213S: Warne 30 MilliMeter PA Low Silver Riflescope Rings Specifications for Warne 30mm Permanently Attached Low Mounting Rings: Category: OPTICS - RINGS Type: Rings Size: Maxima/Magnum Permanent Height: Low Tube Diameter: 30mm Finish: Matte Gloss or Silver Specifications for Warne Scope Rings w/Matte Finish 213M: Manufacturer: Warne Finish: Matte Ring Height: Low Tube Diameter: 30 mm Ring Quantity: Pair Ring Type: Ring Set Fabric/Material: Stainless Steel Size: Low Condition: New Color: Black Features of Warne Scope Rings w/Matte Finish 213M: Ring Height: Low .250 inches Fixed: 30mm Color: Matte No Slip positive recoil surface Capable of withstanding the heaviest of recoil Package Contents: Warne Scope Rings w/Matte Finish 213M Package Contents: Warne 30mm Permanently Attached Low Scope Mount Rings Warne 213M: Maxima Steel Rings 30mm Weaver/Picatinny PA Low - Matte 213M