Abstract: A tool, such as an electromagnetic pick-up tool, having a housing with a compartment which contains a power supply. The housing receives an elongate wand which carries a light or magnet and which is electrically connected to the power supply at terminal posts within the housing. The wand is retained from rotation by an anti-rotation lug or by projections which pinch the wand. The invention may also be used to couple other electro-mechanical components.