Black & Decker™ VSR Switch is designed for DeWalt® type 1 DC986KA 18 V XRP mid-handle hammer, type 1 DC988KA, DC988KA-AR, DC988KA-B2, DC988KA-BR 18 V hammer drills and type 1 DC988VA hammer drill. Switch handles on/off as well as variable speed functions. It has 2 leads connected to its 2 terminals, a battery connector, a heat sink and an unattached forward/reverse lever.