The MK-65 was the first tactical fission bomb used by the U.S. military. So, it is only fitting that the MK-65 was the first bait created in the Bomb Squad arsenal.  It's longer profile creates a sizable target from below, and its blunt nose creates a shockwave that can be seen from the first crank of the reel. Roll it slow and listen to it ring.  

6.5", 7.5 oz.

All of the Bomb Squad Flap Tails at MTO have the latest updates that Jeff notes in the below video.