The Four Hump Bike Rack for Nine Bikes is a high-capacity bike rack which can handle large groups of cyclists at once. It is perfect for popular parks or city centers which anticipate a large amount of people riding bikes. It has a wavy design which is instantly recognizable to cyclists who will be familiar with using racks just like this one. Although it has a long structure with an impressive bike capacity, it is only fastened to the ground in two places, making it much easier to install than several smaller bike racks. It is made from commercial grade steel with a galvanized zinc layer that keeps it from rusting and also gives it a little extra strength. There are different sizes of pipes to choose from with either 1.90” or 2-3/8“ outer diameters. The metal even has three different coating finishes to choose from.