The Lalizas series of drains are of different diameters for different drain sizesThey are made of Nylon, supplied in White or Black
each of the drains can be applied to specific drains in the Lalizas range Associated Products : 70209 Drain Plug w Non Ret Valve f Thru Hull Ø22mm White 10253 Through Hull Drain 31301 Bilge Pump Switch 31323 Rectangular Water tank