1st Gen Wack'Em O-Rings - O-Rings available 25 to a pack in black or clear in 4mm, 5mm, 6mm and 6.9mm sizes. Features: 4mm = Finesse Worms 5mm = 4-5in Stick Worms 6mm = 5-6in Stick Worms 6.9mm = Magnum Worms