The Drilling Buckets are designed specifically for drilling all types of soils below groundwater. For drilling in a variety of soil conditions swivelled bottom gates can be supplied with different types of teeth. The opening of the swivelled bottom gate is facilltated by an automatic or manual tip mechanism. A ventillation pipe prevents the occurrence of a vacuum when lifting the tool. For large drillling diameters or for the use in uncased bores, buckets with double start head are recommended. The diameter series of buckets are standard sizes. Other lengths and diameters can be supplied on request.