Cordless Rotary tool GCU 18V-30, The GCU 18V-30 gets all-day performance to cut over 100 meters of 12 mm drywall with a 1/8 (3.17 mm) bit on one ProCORE18V 4.0Ah battery thanks to the powerful brushless motor spinning at 30,000 rpm. The compact, lightweight design and a dust-sealed switch ensure comfortable gripping in all positions, keeping you fatigue