Mizuno 630 Fast Track driver
The Mizuno 630 Fast Track driver allows you to slide weights to affect sidespin and backspin. The 445cc head sits slightly open at address.
Verdict
The head might be slightly smaller than the maximum 460cc, but the distance was great. Like the previous MP driver, we loved the feel off the face. The simple weight changing system worked extremely well. The weight rail did however create a whistling sound during practice swings.