This spinner jig has a long and narrow head resembling a bait fish with a swollen belly. Predatory game fish think that's easy pickings for dinner.

Way to read the pull down is as follows:
1st four #'s followed by * is the model #, then the rest is the # of cavities the mold has and what size that cavity is in oz.

Models 3221 and 3368 have recessed eye sockets.
The 3221 (SJ-3H-L) takes up to size 2.5 (5/32") eyes.
The 3368 (SH-3H-X) takes up to size 5 (9/32") eyes.

Model 3240 (SJ-3H-SA) has protruding eyes for paint application.