Get the flexibility and economy of using one chuck on two lathes with our Easy Spindle Adapter. This high quality product is offered in two size choices. You can easily adapt a chuck with a 1" internal thread for use on a lathe with a 1-1/4" spindle (1" - 8 TPI male thread to a 1-1/4" - 8 TPI female thread) by purchasing the 1-1/4" Adapter; or adapt a chuck with a 1-1/4" internal thread for use on a lathe with a 1" spindle (1-1/4"-8 TPI male thread to a 1"-8 TPI femail thread) by purchasing the 1" Adapter. Precision machined steel for long wear; flats on the perimeter let you use a wrench for tightening. This product is 100% Made in USA. Fits all Easy Wood Tools Easy Chucks, and most other manufactured brand chucks.