This spindle adapter (CA125) from Easy Wood Tools lets you mount smaller chucks with 1 x 8TPI inner threads onto larger lathes that have a 1-1/4'' x 8 TPI spindle. If you bought the smaller chuck and then later upgraded to a larger lathe, this adapter lets you keep on chuckin' without having to buy a larger chuck. Flats on the perimeter let you use a wrench for tightening. Two sized lathes, one chuck? You need our Easy Spindle Adapter! It gives you the flexibility and economy of using one chuck on two lathes. Update your 1 -8TPI threaded Easy Chuck to fit a 1¼ -8TPI spindle Fits all lathes with a 1¼” spindle thread Precision machined steel Flats on the perimeter let you use a wrench for tightening. Fits all Easy Wood Tools Easy Chucks, and most other manufactured brand chucks Dsigned and Manufactured 100% in the USA Material Alloy Steel Item Weight 1.05 pounds Part Number CA125 Manufacturer Easy Wood Tools Item model number CA125 Batteries Included No Batteries Required No Product Dimensions 5.5 x 7 x 2 inches Item Package Quantity 1 Is Discontinued By Manufacturer No