Consists of a round plastic plate that you put above the hole. The plate is 26.5cm in diameter and has a slotted hole for the line. You then place the spool on the plate so that it is fixed above the hole. The rocker in the shape of a flag consists of a spring (purse string) that is 38cm long. The flag is tensioned against the coil. When it bites and the spool starts to spin, the flag goes up and indicates the bite. Supplied with 20m nylon line, leader with hook (not hook) and 8 gram sinker.