Although they might appear similar, they're quite different; Centerdrive is an OTF design, with a OHO blade, centered, OHO bit driver, sprung pliers with replaceable cutters, a pry bar, and saw. The file and the serrated blade are from the MP series.The NXT has a butterfly design with non replacable cutters and non sprung pliers head, THO blade, fixed drivers, no saw, smaller file and a pocket clip. It seems that quality and finish is somewhat better in the Centerdrive series. Both are made in China.