Alright mechanics and industrial folks, this AKM hydraulic cap and plug kit is seriously comprehensive. You get 160 pieces total, covering the most commonly used JIC and ORFS sizes - 4, 6, 8, 10, 12, and 16. That means you're pretty much covered for most hydraulic applications you'll encounter. The quality is legit - made from 45# structural steel that's built to handle the tough conditions of agriculture, construction, mining, and fuel industries. These aren't flimsy plastic caps that'll break after one use; they've got excellent sealing ability and corrosion resistance that'll stand up to high-pressure environments. What's really handy is the organized plastic case with the parameter table - no more digging through a messy toolbox trying to find the right size. The threading is precision-cut so they screw on smoothly and create a solid seal to protect your hoses, tubes, and pipes from contamination. Whether you're capping off lines during maintenance, protecting new components, or just keeping your hydraulic system clean, this kit has exactly what you need. The variety of sizes means you're prepared for everything from smaller fuel lines to larger hydraulic connections. Definitely one of those tool kits that pays for itself the first time you need a specific cap or plug and actually have it on hand instead of having to run to the supply store.