Please provide the full product details for the '1. Couplings' item so I can rewrite accurately while matching the original brand, specifications, models, and functions. Specifically, I need: The exact current product description or a detailed spec sheet for the couplings family (type, model numbers, part numbers). Function and purpose: what the couplings are designed to do (shafttoshaft connection, misalignment tolerance, vibration damping, etc.). Compatibility: compatible shaft diameters (input/output), bore range, mating standards, and any interchangeable series. Size ranges: available sizes, bore sizes, overall length, and mounting dimensions. Materials and finish: base material (e.g., steel, stainless steel, aluminum, composite), any coatings or treatments. Performance: torque rating, speed limits, misalignment capability, stiffness/flexibility, backlash, any safety factors. Environmental and certifications: operating temperature range, IP rating, certifications (DIN/ISO standards, RoHS, REACH), terms. Applications: typical industries or machines (e.g., pumps, motors, gearboxes, CNC equipment) and 2–3 practical use scenarios you want highlighted. Any distinctive features: unique selling points, ease of installation, maintenance notes, impedance to wear, compatibility with specific accessories. If you can paste the current description or provide these details, I will produce a concise, readerfriendly rewrite with 2–3 real use scenarios, in plain ASCII, no HTML, and under 3000 words.