If you're working on automotive, industrial, or equipment projects that need serious clamping power, these T-bolt hose clamps are exactly what you need! Made from black-coated 304 stainless steel, they're built to last with excellent rust resistance and high hardness that prevents deformation under pressure. The 70-78mm range (that's 2.76-3.07 inches) makes them perfect for 2.5 inch hose inner diameter applications. You get two clamps in the pack, which is great for multiple projects or having a spare. The T-bolt design is seriously robust with solid stainless steel bolts that can handle high torque without stripping. The self-locking nut is a game-changer - it prevents the clamp from loosening over time, maintaining that perfect leak-proof seal. These work amazing for oil, water, gas hoses, and various hose interfaces in automotive systems, garden irrigation, construction equipment, and industrial applications. Just make sure to check your hose's outer diameter before buying to ensure proper fit - for extremely thin or thick hoses, you might need to consider different sizes. The black coating gives them a professional look while adding extra corrosion protection. Whether you're a professional mechanic, DIY enthusiast, or work in industrial maintenance, these T-bolt clamps provide that heavy-duty performance you can count on for critical connections where leaks just aren't an option.