Check out this sneak peek of the new S&M Ironman sprocket. It's all steel, spline driven and coming in 24t, 25t, 26t, 27t, 28t, and 30t! The Iron Man is back! Almost like Tony Stark, the Iron man has the power to save us all with it’s super-human strength and vast array of weapons... nah, just F-in’. But this isn't the same lil’ dime piece you’ve seen before, we bumped it up with a few upgrades.