Megabass Lures : V-FLAT (New 2006)

(Head Weight: 5/16, 3/7, 1/2 & 1.3 oz.)
Introduced in the late 80s, the V shaped head design (keel shape) changed the spinnerbait head design over night. As the keel of boats has proven, V-FLAT head design improves stability and ability to navigate, and weed avoidance, and when retrieved fast the blades starts to roll left and right.

The idea is simple, that is why it is so effective. This is not a conventional spinnerbait. Click color chart below to enlarge.

Source : http://megabassusa.com