Bosch Power Tools and Accessories (www.boschtools.com) added its electronic kickback protection technology to its 5-in. 1803EVS and 6-in. 1806E angle grinders. The company says the grinders now shut off when the wheels become bound. Restart protection also was added to the grinders. If the slide switch is moved into the "on" position while unplugged or if the power source is interrupted while the grinder is in use, the tool will remain turned off until the user switches the grinder to the "off" position and then back to "on."