Download Our Full Catalog
Download Our Mini Catalog
Rollover image to zoom
As of March 2021, Sioux's Threaded Drill Motor is NEW & IMPROVED and better than ever!
Sioux's classic Threaded Drill Motor has been completely updated with the Signature Series treatment and offers the latest in ergonomics, durability, and power! The predecessor to this drill (the 1AM1551) has been the standard in the aviation industry for well over a decade with tens of thousands of drills in service throughout the industry. With the new improvements and our low pricing, now is the time to UPGRADE to the latest model and technology. Made in the USA!
Order Model # SDR4A27S8L
Sioux .4HP Signature Series 90º Threaded Drill Motor, 2700 RPM
(Model SDR4A27S8L is the direct and equivalent replacement for legacy model 1AM1551 which is still available for sale but will be discontinued in the near future.)
Don't forget...we offer FREE ground shipping within the USA for orders over $95 that are pre-paid with a credit card. (And now, this includes Alaska, Hawaii, & APO/FPO addresses!)
As one of the largest authorized Sioux distributors in the world, we are committed to offering the absolute best price on any Sioux tool that we stock - in the very unlikely event that you find a Sioux model in stock and for sale at a lower price at any other authorized Sioux distributor, let us know and we will beat that price - period. We constantly monitor our competitors to make sure that we are offering the best value so that you can buy from us with confidence.