I used one of these with great success on my Ping G15: billybobsgolf.net/product.ph … 320&page=1
If you’re like me, and you have to use a modern driver for competition, the lie angles can be a bit of an issue if you train with old gear. I installed one of these in my Ping driver when I reshafted it (with a heavier and stiffer shaft) and flattened my driver 2*. It is still pretty upright, but it made a huge difference visually. It doesn’t even look like the same club.
Note: these only work if you have a .350 hosel and a .335 shaft.