845-MAX DRIVER: FLEX-11 face design features 11 different face thicknesses to produce faster ball speeds on off-center hits Face progressively thins out from 3.3mm in the center to 3.0mm, 2.8mm, 2.6mm and 2.4mm Face design is 13% thinner on average Improved Inertia Technology™ features a weight saving carbon crown and a super thin titanium cast body to boost Moment of Inertia High M.O.I reduces twisting on off-center hits for more forgiveness Adjustable with 6 setting options to promote lower, higher, draw and fade ball flights New internal ribbing design produces a more pleasing sound and a more solid feel GRIP: Lamkin Crossline 360 Speed/Distance