This ULTECHNOVO pulley is built tough for marine and outdoor use! The combination of stainless steel and nylon construction means it can handle serious loads without rusting or corroding. Measuring 9.8x5.2x2 cm (about 3.85x2.04x0.79 inches), it's compact but seriously strong with a 1650lb load rating. The 360-degree swivel screw lets you rotate it to any angle you need, and the shackles are slotted to prevent lines from slipping. Perfect for kayak rigging, boat systems, home gym setups, or any situation where you need smooth rope movement. The low-friction bearing makes pulling effortless, and the durable design won't deform or break under pressure. Whether you're handling wires, moving objects, or setting up outdoor equipment, this single pulley delivers reliable performance. It's one of those tools that seems simple but becomes indispensable once you start using it. The quality craftsmanship shows in every detail - this isn't some cheap import that'll fail when you need it most. Outdoor enthusiasts, boat owners, and DIYers will find endless uses for this versatile pulley block.