Primary Arms Deluxe 1" Scope Mount - 1.5" Center Height PADLXSM1 USE: Ideal for 1913 Picatinny mounting and similar "flat-top" mounting platforms. COMPATIBILITY: For use on scopes with 1 inch tubes. DURABILITY: Made of aluminum construction with a durable matte black anodized finish. 1-YEAR WARRANTY: If a defect due to materials, workmanship, or normal wear and tear has caused your product to malfunction, Primary Arms will either repair or replace.