Premium Components & Wide Range Of Loads To Choose From Remington's STSA(R) Target Loads have taken shot-to-shot consistency to a new performance level, setting the standard at major skeet, trap, and sporting clays shoots across the country, while providing handloaders with unmatched hull longevity and reloading ease. PremierA(R) STS shells are the most reliable and consistent shells you can shoot, but with premium-quality components Hard lead shot in a variety of load weights to give an optimum balance of velocity and comfortable recoil. 25 shells per box. Mfg: Remington