Check the listing for details. Blackalloy Precision Pnuematic Drill Unit 150- 1.5TH A7171. Condition: Used. Listed at 200.00 USD. This is a working unit salvaged from a woodworking machine. These units sell new for almost $1000. This one still has a lot of life in it. 3/8 cap in metal. Spindle is 3/8 24 tpi Jacobs 31BA. Unit has been cleaned and bench tested. No issues. Drill depth 1.5".