We took our Smacdown .500 Bar and Made the MOAB!! Mother of all bars!!! The Smacdown .500 Pro has the best Stiffness to weight ratio on a TRUE 1/2 Bar on the Market today. The Smacdown .500 PRO is made with 100% ULTRA High and Ultra high Modulus Pitch Fiber. The Smacdown 500 Pro is 20% stiffer than the Smacdown 500 and is stiffer than most if not all bars on the market ranging from .500 OD to .590 OD. It is even stiffer than many competitors 5/8 bar. Unlike many bars that call themselves 1/2" this one you can put a Micrometer on and Know that it is, what we say it is. The Smacdown .500 Pro uses a unique composite dampening material called SMACWRAP. Smac is the ULTIMATE in Vibration Dampening and shot Recovery. We are the first to utilize this technology in Archery Stabilization!! If you want the BEST 1/2 Bar on the Market today the Smacdown Pro .500 is it!