Abstract: A replacement cutting head for a bump head cutter of a string trimmer which replacement head can also be utilized as a blade assembly replacement for a power lawn mower. The cutting head is conventionally attached to the drive shaft of the tool, and it features a whirling disk having a plurality of heavy gauge flexible members attached thereto. These members extend outwardly due to centrifugal force upon actuation of the tool and which due to the high rotational speed of the cutting head, cut through plants of all kinds.