The 18V LXT Lithium-Ion Cordless Concrete Vibrator Kit produces a longer run time while maintaining a lower discharge rate in all jobsite vibration applications. A 30-minute rapid optimum charger optimizes battery life by actively controlling current, voltage, and temperature. The head diameter is 1 in., and the length is just below 9 in.; shaft length measures 4 ft., and 12,500 vpm. Makita USA Inc. 800-462-5482. www.makitatools.com