In terms of fishery, the use of stone sinkers with slits (the sinkers for nets shaped out of stone) was the characteristic of the region; it is assumed that the technique of using earthenware sinker pieces in the Kanto region was handed down and lead to the use of the stone sinkers with slits.
漁業面では切目石錘（石を加工して作った網用の錘）の使用が特徴であるが、これは関東の土器片による錘の技術が伝播して出現したと考えられている。