Practical structural design: 45 degree right angle bend design, precise drainage pipe turning, smooth and burr free inner wall, less likely to accumulate dirt and block when water flows through; There are two types: "with inspection port" and "without inspection port" - the one with inspection port has a detachable cover at the top, which is convenient for later pipeline dredging; The model without inspection port focuses on basic steering and has a simpler structure.
eBay