*All Jeffrey Machine Inc. standard shim boxes are fabricated and CNC machined to fit our Jeffrey Machine Inc. drive box.
And are not guaranteed to fit another manufacturer's drive box. Let us know if you need a custom fabricated shim box to fit a different manufacturer's drive box.
Diameters: 24″– 144″Kelly boxes: All Kelly boxes made to customer specificationsBarrels: Cylinders up to 2” wall availableBarrels undersized to meet m..
Commonly Requested Diameters: 16″– 144″Kelly boxes: All kelly boxes made to customer specificationsGussets: 1″ thick gussets standardBarrels:➤ Up to 2..
Commonly Requested Diameters:14″– 144″ *Type: Type 6Cut: DC/DF, DC/SFKelly boxes: All boxes made to customer specificationsCenter Shaft: 4″ OD – 12″ O..