This listing is for a set of four (4) grease canisters, and two (2) retainer pin tools. NO OCKS! The grease canisters are handy for your bench or range bag.  And the retainer pin tool makes it easy to remove the retaining pin for your firing pin (the idea for the tool comes from master gunsmith, AR armorer and educator Chad). NO OCKS! Whether you're a professional gunsmith or an avid shooter, this set of tools will be a valuable addition to your arsenal. Don't miss out on the opportunity to improve your firearms maintenance with these hard-to-get, high-quality tools.