Used speed bumps for extending electrical cables or water pipes for watering plants. Very excellent quality and I am done using them. Each speed bump has 5 drainage channels/paths. Best size, quiet, strong, and stable. Quantity: 7 pieces (enough for a street 10 meters wide). For sale, used, at a good price, God willing. Simple use and it will go to whoever deserves it. Note that the purchase price of a new piece was 300 riyals. Selling all of them.