Transkei Nose System pack of 3 Extra Scent-emitting Cartridges Small Crawfish Scent. These extra cartridges are made to fit into the Transkei Nose System Lures. Each cartridge gives off a natural concentrate which reproduces the equivalent scent emitted by 30 wounded bait fish. The small cartridge fits 2"and 2-3/8" baits. This item will ship free with purchase of a Transkei lure assortment.