Our marlin board mount berley bucket is fully height adjustable! The collar which surrounds the berley bucket has no pre drilled holes, so use it as a template for your cut out, then place your bucket through the cut out, make sure your berley bucket reaches your water level , drill 3 fixing holes and bolt it up with the supplied stainless steel bolts, washer and nylocks. Includes a Viper 5 YEAR WARRANTY Dimensions: H 40CM X DIA 15CM Packaging: 48CM X 24CM X 20CM - 3KG