This is a superbly made drill.  VSR is "Variable Speed Reversing" and the grip on the drill is great for large hands.  I like the moveable front grip; it rotates 360 degrees around and a simple twist of the handle loosens it allowing it to rotate.  The chuck and chuck key are well made and overall, this is better than my Makita drills at less cost.  Generously long cord.  Tough drill.