The DH50MB 2-in. SDS Max Hammer Drill has electronic feedback variable speed control which allows the number of revolutions to be adjusted without fluctuations. Top drilling speed is 250 rpm and impact energy is rated at 3.7-5.9 ft./lbs. and 1,200-2,500 bpm. The "rotation+hammering" setting permits drilling, while the "neutral" setting allows positioning of the tool tip and "hammering only" mode allows chiseling and chipping. A change level under the cylinder case allows these changes to be made while the drill bit is still mounted. With a weight of 21.6 lbs. and a length of 19.5-in., the DH50MB will not wear its operator out. Isolating rubber between the crank case and handle and housing absorbs vibrations.

Hitachi Power Tools, 3950 Steve Reynolds Blvd., Norcross, GA 30093; 800/546-1666;