Bob's Machine 12" Versa Race Jack PlatesBob's Machine's new Race Series jack plates are exactly what every racer needs! The Versa series race jack plate has a manual screw jack with 6" adjustable travel. It can be converted to a different series if necessary at a later time. Bob's Machine has a patent pending transom side plate interlocking system to the side rails. They have also machined off all the excess material on these jack plates to save weight.This unit has a max plate weight of 85lbs