Rainbow Plastics Gizmo Bobber Stop - An ingenious way to control the depth of a Slip float and yet be able to reel your bait or lure to the end of your fishing rod for easy casting. Great for ice fishing. Slips easily along line to set your depth Passes through open & closed face reels Use for all slip float fishing Will not damage your line Will not freeze on line, makes the Gizmo ideal for ice fishing