Oxygen cylinder trolley specifications vary by model but typically include material (mild steel, stainless steel), construction (powder-coated, tubular), wheel type and size (solid rubber, castors, 100mm to 300mm), dimensions, weight, and capacity for specific cylinder sizes (e.g., 5 to 15-liter B-type cylinders). Features like load capacity, special features like portability or stackability, and construction details such as heavy-duty chassis are also important.