Depth finders take the guess work out of setting slip bobbers. Clip the weight to your hook and lower till you hit the bottom. Now that you know the depth of the water, you can place your float where it is needed to keep your bait at the desired level. Depth finders come two per pack in colors chartreuse and orange.
Orange Depth Finder (2 per pack)
Chartreuse Depth Finder (2 per pack)