Locks onto Screwdrivers, Reams and Smoothes Thin Wall Conduit; Reams ID and OD at the Same Time; Two Set-Screws to Fit Round or Square Shank Screwdrivers; Fits up to 3/8 Inch Keystone-Tip Screwdrivers; Not for Use on Power Tools; Designed to be Used on Electrical Metallic Tubing; Made in USA

Specifications:

Overall Length: 6.75 Inch