A self-suction dust collection attachment including a dust collection motor and a fan can be mechanically coupled and electrically connected to multiple types of power tools. A dust collection attachment attachable to a first power tool includes a casing, a suction portion, a dust collector that captures dust sucked through the suction portion, a fan that generates a suction force in the suction portion, a dust collection motor that rotates the fan, and an adapter attachable to at least a second power tool and detachably attachable to the casing. The adapter includes a mechanical coupler that couples the casing and the second power tool and an electrical connector that electrically connects the dust collection attachment and the second power tool when the dust collection attachment is coupled to the second power tool.