Bosch Power Tools , the electrical tools division of Robert Bosch GmbH , is the world market leader for power tools . Bosch Power Tools supplies power tools, accessories, measuring technology and gardening tools. In addition to their own products (Bosch blue for commercial use, Bosch green for home improvement), there are other brands in the corporate group, such as Dremel , Skil , Aresi, Freud, Hawera, Standall and Sia Abrasives . Bosch also offers the accessories for the power tools. Bosch also supplies other power tool brands as an OEM supplier.