The 15 A super SAWZALL® reciprocating saw is the fastest, most durable reciprocating saw in the world. it is the first SAWZALL® reciprocating saw to include constant power Technology™ which maintains constant speed and power under load for unmatched cutting performance. The 15 A motor provides the industry's highest overload protection. The patented gear protecting clutch extends gear and motor life by absorbing high impact forces caused by sudden blade lock-ups. The patented counter balance mechanism reduces user vibration. Milwaukee® Corded Reciprocating Saw, 1-1/4 in Stroke Length, 0 to 2800 spm Strokes per Minute, Orbital Cut, 120 VAC, 15 A, Plastic Housing Material, D-Handle, Variable Speed Trigger Switch Control, 18-3/4 in Overall Length