The Turbo shear Model TSHD1 attaches to a minimum 14.4-Volt cordless or maximum 7-Amp A/C electric drill. The driveshaft of the TSHD1 inserts directly into a 3/8-in (10 mm) or 1/2-in (12.7 mm) chuck. The cam end of the driveshaft operates an upper blade to create a smooth scissors cutting action in most common sheet metals. A telescoping drill clamp adjusts to fit length and width of any drill housing for one-hand operation. The compact, molded clamp even fits smaller lithium-ion battery powered drills. Heavy-duty gearing combines with high carbon steel blades to cut up to 18-ga (1.22 mm) automotive steel. Minimal force is required to move through a cut. The Turbo Shear Model TSHD1A1 can follow a straight line or tight left curved or square patterns. A wide jaw opening navigates cuts in auto body panels and profiles including layered metal, rocker panels and plastic bumpers. The sleek, lightweight, aluminum cast shear head and form-fitting drill clamp ensure balanced, easy control. Lateral blade adjustment capability ensures that optimum cutting performance and maneuverability can be maintained for the life of the blades. Service life of the blades is rated at 2500-ft (762 mm) minimum in 24-ga (0.61 mm) mild steel. The long-wearing blades are replaceable and easily installed on the job.