As a true fan of Teenage Mutant Ninja Turtles (I grew up watching the cartoons and collecting the Playmates figures), I was extremely ecstatic when Mega Construx picked up the licensing to create TMNT figures. As you have probably noticed, these Mega Construx figures are highly detailed and very articulated. In a way, these figures are like the micro-sized version of the Playmates TMNT figures. I love how they used good quality plastics to make these too.
Over the years, Mega Construx put out several awesome TMNT sets and Donatello Battle Pack (DXF17) was definitely one of the rarest of them all. It was only available for a very short period of time and it is now one of the most sought after Mega Construx TMNT sets.