Aerojet Rocketdyne plans to complete two other ... “We’re also for the first time going to be testing an additively-manufactured ball-shaft on one of our valves on the engine, on the OPOV ...

you can get the Cobra Aerojet driver in right or left-handed for $300 off. You can get it in 9, 10.5 or 12-degree lofts with four flex options. I went with a 9-degree head with a still flex shaft ...