The AccuFlex Heavy Duty. Almost all of this stabilizer weight is at the end away from the bow. At 3 ounces heavier than the standard AccuFlex, this reduces the amount of stack weights you need to run to achieve balance. Our proprietary End Loaded technology produces the absolute deadest in hand feel of any stabilizer ever made, guaranteed. Available in 6,8,10 and 12 inch models and all our custom finishes!