An ultra-high definition (8K), cinematic vertical video, showcasing the effortless power of a heavy-duty kitchen shear. A professional chef's hands are featured in dynamic close-ups. Sequence: 1) A single, swift, and satisfying cut through a thick raw chicken bone ("Easy bone cutting, neat and not laborious"). The action is fluent, fast, and the blade remains perfectly undistorted. 2) The shear is then used to rapidly and aggressively descale a large fish, showing scales flying outwards. 3) Finally, the shear is purposefully smeared with thick grease, then held under a strong stream of running water, and instantly, it's spotlessly clean ("One rinse, immediately clean"). No text or captions are overlaid on the video. The stainless steel tool is crisp, rust-proof, and reflects the bright, clean studio lighting. (Style: High-Impact Product Demonstration, Speed: Very Fast Cuts, Camera: Dynamic Close-up/Macro, Quality: 8K, No Captions)