Grafalloy Boost Grafaloy engineers have given the new Boost Shaft an incredibly skinny profile, reduing drag by 15% for longer drives. Grafalloy's proprietary VLT Technology gives the ball extreme peak trajectory, while its Micro-Mesh Tip Technology keeps you from sacrificing straighter shots for greater distance. Grafalloy Boost Wood Shaft: Stock Options: R Flex, S Flex, A Flex