The Arbogast Bobber Stop is the must-have accessory for every panfish angler. Once you locate the depth of your fish, simply “mark” the spot on your line by installing the Bobber Stop spring. This will allow you to reel your line in completely, bait the hook, then re-cast to your special fishing spot. Once the spring reaches the red bead, it will stop at the preset depth, keeping the bait at the desired depth every time. You can adjust the Bobber Stop's depth setting with the flick of your finger. Easy-to-follow instructions for quick rigging are found on the back of the package.