21 Threaded Drill Bushing – 1/2″ Threads For Aircraft & Sheet Metal Tools (Used)

Here’s a handy tool for your workshop—a used 21 threaded drill bushing with 1/2″ threads.

It’s perfect for aircraft maintenance, sheet metal work, or any precision drilling task where you need a reliable guide.

This bushing has been previously used, so it may show some cosmetic wear, but it’s still fully operational and functions as intended.

It’s a generic/unbranded model, but it gets the job done.

Use it in drill jigs or fixtures to ensure accurate, repeatable holes.

No UPC or MPN, but it’s a solid addition to your tool collection, especially if you’re working with metal.

Great for shops, makerspaces, or DIY enthusiasts.