Gardena Pipes and pipe guidance

There are two types of piping. On the one hand, there is the large one that has a circumference of 1/2" which is called connecting pipe. On the other, commonly referred to as the supply pipe, there is the small one that has a circumference of 3/16". Each pipe is 50 feet long. Hence, it is not length that differentiates them, but their circumference. For ease of understanding, one can compare the 1/2" pipe to the trunk of a tree and the 3/16" pipe to its branches.