Korda COG Flat Pear Lead Used in conjunction with the Korda COG Kit, these leads enable your hook link to plug into and leave the lead at the point where it offers the most resistance to a taking fish, therefore aiding hooking.COG stands for Centre of Gravity. This lead system is so called because the rig is attached to the lead in the exact centre of gravity, ensuring that a fish that picks the bait up hits the full weight of the lead immediately. The COG turns far more pick ups into runs because the fish feels the FULL weight of the lead INSTANTLY. It turns a normal lead clip system into a more effective hooker than any other system.The Korda Lead Clip and Special Boom must be used with the correct COG lead. If the boom is too short the lead will sit/fly poorly, if it is too long it may cause tangles. To eject lead on the take, secure the swivel with the pin provided. To turn the rig into a running setup after the initial pick up, simply lose the pin! We would suggest using soluble foam, along with IQ or N-Trap coated hook links to prevent tangles. Korda COG Kits sold separately.