Selected from, firmly, make it Connects more tightly and long time to use For Drain an aboves ground pool completely / drain quickly / connector damaged need to change It will be for Swimming pool to change water It comes with stainless steel hose clamp, can adjust the wide from 19mm to 29mm, when the swimming pool hose adapter for Swimming Connects with the garden hose, the hose clamp will help to fix the hose to avoid the water dripping The rational designed of the buckle on the back will not disengage the steel belt due to the large force The swimming pool drain plug connector for Swimming are produced by accurate designed to fit perfect with the hose The swimming pool drain plug connector hose adapter replacement only for Swimming P6 series ( Ex: P6A1420 / D1420 / H1420 / D1420ASS16 / F4D019B-03B