Eight magnetic-tip, hollow-shaft nut drivers were designed to allow users to easily turn nuts with one hand. Designed for driving nuts on long bolts, studs and screws, the hollow shaft tool can be used to work on electrical and HVACR panels, as well as stacked circuit boards. Other features on the rare-earth magnetic-tip nut drivers include soft handles for greater torque and comfort, color-coded handle ends for quick identification of hex size, chrome-plated shafts to prevent corrosion and internal flanges for solid, twist-resistant shaft anchors. Klein Tools, 7200 McCormick Blvd., Chicago, IL 60659; (847) 677-9500; fax (847) 677-4476.