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54021 1/4'-28 Male to 1/4'-20 Male Adapter for Aircraft/Airplane Drills & Similar Tools with Internal ¼”-28 Thread, Convert to 1/4”-20 Thread for 1” – 3” R Type Quick Change Disc Holders

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$12.99

$ 5 .99 $5.99

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About this item

  • [IN THE BOX]: 1 each Pro-Graad 1/4”-28 Male Threaded x 1/4”-20 Male Threaded Adapter for use on Airplane / Aircraft Style Drill & Similar 1/4-28 internal threaded tools. Compatible for use with your 1/4"-28 Female Threaded Tool and 1” – 3” R Type Quick Change Disc Pad Holders. NOTE: Quick Change Pad Holder and Tool are NOT Included. This item is for the ADAPTER ONLY.
  • [COMPATIBILITY]: Designed for use on Airplane / Aircraft Style Drill Tool which have a 1/4”-28 Female Thread. The adapter will convert your tool to 1/4-20 male thread compatible for mounting Roloc, Roll Lock, Type R, TR, Type S, TS, TSM and Type P Style Quick Change Disc Holder Pads.
  • [DURABILITY]: Precision crafted with durable carbon steel and blackening steel quenching treatment, this adapter is engineered for exceptional durability and extended longevity. Made for Airplane / Aircraft style tools, ensures a reliable and long-lasting performance when paired with 1” – 3” Quick Change Style Pad Holders.
  • [APPLICATION]: Broaden the capabilities of your 1/4"-28 internal threaded tool using this Pro-Graad Adapter designed for use with Quick Change style holders. This adapter expands your Polisher Buffer tool’s potential, enabling the use of 1" to 3" quick-change style abrasive and finishing discs on your tool. Overcoming limitations posed by the standard offering with the tool, this adapter allows the use of 1” – 3” diameter pads, extending versatility, and unlocking additional capabilities for your projects.
  • [PRODUCT GUARANTEE]: All Pro-Graad products are made with quality materials, which exceed industrial grade standards. We are driven to deliver high-quality, high-performing products to the end user. This is why we stand behind our 100% Product Guarantee. If you are not satisfied with the product, simply return your purchase within 30 days, and we will replace or refund your order. Pro-Graad is a USA Company with US Based Customer Support.


The Pro-Graad 1/4"-28 to to 1/4”-20 Adapter for Airplane / Aircraft Style Drills & similar 1/4-28 internal threaded tools is a versatile accessory designed to enhance the functionality of your tool. This adapter is specifically crafted for compatibility with tools having an internal (female) 1/4-28 thread. Crafted from durable carbon steel with a blackening treatment, the adapter ensures exceptional durability and longevity, guaranteeing reliable performance over time. Its design allows for effortless conversion from a 1/4"-28 Thread to a 1/4”-20 Male Thread, facilitating the mounting and compatibility of Roloc, Roll Lock, Type R, TR, Type S, TS, TSM, and Type P Style Quick Change Style Disc Holder Pads. In the box, you'll find one Pro-Graad adapter, tailored for use with your 1/4"28 internal threaded tools and 1” – 3” R & S Type Quick Change Disc Pad Holders. It's important to note that while the adapter broadens the capabilities of your tool, the Quick Change Pad Holder and Tool are NOT INCLUDED. This adapter opens up new possibilities for your projects, allowing you to utilize 1" to 3" quick-change style abrasive and finishing discs effortlessly. By overcoming limitations posed by standard offerings that come with the tool, it empowers you to tackle a wider range of tasks with precision and ease.