This air operated power draw bar comes complete with a 3/4 socket. It uses your stock milling machine draw bar, and if your draw bar is not a 3/4 inch DB, you can use any size socket you desire, the butterfly impact is a 3/8 in model. This power draw bar will fit Bridgeport and most other imports. Also included is a pressure regulator unit, you simply bolt the power draw bar to the top of your mill using two 1/4-20 bolts, and connect the air supply, set the regulator to 90 psi, which is the maximum for this butterfly impact, and believe me its more than enough pressure to the job. You will LOVE this product!
thanks for looking......

There are 12 mounting holes, drilled on a 4.35 inch bolt hole circle. If you have a Bridgeport clone or other milling machine, measure your mounting holes to determine if this product will fit your mill. If your holes do not line up, this product can still work if YOU are willing to locate, drill and tap 2 mounting holes. Please do not purchase this product then email me telling me that it does not fit,I have given you all of the information you need to make an informed decision. You would be surprised at how many machinists don't want to drill and tap 2 holes, and I am not paying shipping for you to "see" if it might work. Measure and be sure, thanks......Karl