Roboworm fat straight tail worm is the classic worm style- but incorporating robos unique designs. Super sensitive, these Baits give a ton of action with the slightest movement. Straight tail Worms incorporate robos salt release system- which makes them heavier when you start fishing, and lets you know when the salt is running out and its time to change Worms. The salt release system also gives a burst of salt when a fish strikes- which makes them hold on longer-for a better hook up.