Product Description The Yankee Hill Machine (YHM) 1.375"-24 HUB Direct Thread Mount converts HUB-compatible suppressors to a simple, direct-thread mounting system. Installation is straightforward: remove your current mounting mechanism, thread this mount onto the suppressor using a 3/4" open-end wrench, and then thread the suppressor onto your barrel. Built from heat-treated 17-4PH stainless steel with a Melonite QPQ finish, it delivers durable performance while adding minimal weight. Product Highlights Converts 1.375"-24 HUB-compatible suppressors to a direct-thread mounting setup 5/8x24 direct-thread pattern for compatible threaded barrels Heat-treated 17-4PH stainless steel construction for strength and longevity Melonite QPQ finish for enhanced wear and corrosion resistance Lightweight design at approximately 1.7 oz to help keep your setup balanced Specs Brand: Yankee Hill Machine Co Manufacturer Part Number: YHM-2189-24 UPC: 841812101765 Suppressor Interface (HUB): 1.375"-24 Barrel Thread: 5/8x24 Material: 17-4PH (heat treated) Finish: Melonite QPQ Weight: 1.7 oz Recommended Tool: 3/4" open-end wrench Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.