Just want to welcome our new sponsor BombTech Golf! We did a review of their Grenade driver this summer and very happy to have them on board. Here's the review http://thesandtrap.com/b/clubs/bombtech_grenade_driver_review
Some info on the Grenade driver from BombTech:
BombTech Golf's Grenade driver was co-engineered with the University of Vermont's Engineering department. This unique relationship and pure engineering approach created the innovative Dual Cavity Design. This innovative design increases accuracy, reduces drag by 48% and creates a penetrating ball flight that increases carry distance and total distance.
For more, check out their site http://www.bombtechgolf.com/