Gear On Tour: AT&T Pebble Beach National Pro-Am\nA glimpse of what players are using this week at Pebble Beach\nTommy Gainey's bag at the AT&T Pebble Beach National Pro-Am housed a new set of Callaway X Hot Pro irons. Gainey previously used the company's RAZR X Forged model, the same iron he used to win last year's McGladrey Classic. Bounce was added to the leading edge of the irons to accommodate his steep angle of attack.\nThe AT&T is David Duval's first tournament back as a Nike staff player since splitting with the company in 2010. It didn't take long to put a personal touch on his 53-degree (bent to 50 degrees) VR pro wedge.\nPlaying off college football teams' tradition of putting decals on helmets for solid games or plays, Callaway is attaching X Bomb patches to staff players bags for every drive they hit of 325 yards or more this season. Tommy Gainey already has hit a few such blasts.\nThe 56-degree wedge is bent to 58 degrees and custom-stamped with "Dubl D." The two holes drilled in the back help Duval achieve the weight in the head he prefers.\nWhy is Eric Meierdierks staff bag of interest? Namely because it signals a significant achievement. Meierdierks earned his PGA Tour card after making it through Q school. Meierdierks never went to college, choosing instead to play mostly on mini tours, most notably the Gateway Tour the past four years.\nMeierdierks's Odyssey Versa #7 mallet combines the company's Versa alignment system (black/white/black stripes for Eric) as well as its Metal-X face technology.\nThe explanation for this jazzy "AlisterMackenzie" wedge from Edel Golf is simple: Company owner David Edel also owns three Mackenzie-designed courses.\n\nTaylorMade is pushing its one bucket challenge at Pebble Beach -- a free bucket of balls for people who want to test their RocketBladez irons -- which includes this unfortunate bucket hat. The upside: Any player wearing the bucket hat while making an ace on Pebble Beach's par-3 17th will get $100,000 to give to charity.\nWhat has been one of the biggest advances in golf equipment in the last decade? The use of the Trackman launch monitor. The device helps players break down their launch characteristics and assists tour reps in getting players in the optimal club fit.\nWhy is Hunter Mahan downing a BioSteel energy drink? Perhaps its because the company touts that the drink, "Allows for optimal concentration levels and sustained energy."\nJohn Daly's likeness of himself is yet another creation from headcover-maker Winning Edge designs. The company also made Daly's previous Lion headcover as well as Ian Poulter's headcover that features his likeness.\nNicholas Thompson's staff bag reveals what many tour pros are finding -- that endorsement deals from non-equipment company's are sometimes more lucrative.