Modify the swimming depth with the turn of your wrist – literally. With the Screw Diver System, you can adjust the swimming depth of your Screw Diver System (SDS) compatible bait to dive right into the strike zone. The system’s easy-to-use tungsten weights can be attached to the lure by hand, allowing you to scan the waters column by column. Available in four different weights: 5, 7.5, 10, and 15 grams. Pack includes 2 different weights.