7.5 meters Set: The original length of 2.5 meters, water injection, the longest extension of 7.5 meters

   15 meters Set: The original length of 5 meters, water injection, the longest extension of 15 meters

   22 meters Set: The original length of 7.5 meters, water injection, the longest extension of 22.5 meters

   30 meters Set: The original length of 10 meters, water injection, the longest extension of 30 meters