Preston's Superium Top Kits are specific to the SUPERIUM top line of rods. Match Kit 2.4m - A top two piece kit fitted with 2.2mm internal bushings and a reinforced section allowing the user to fit a Roller Polla if desired. Designed for lightweight elastics on natural waters and commercials. F1 Kit 2.4m (standard and grey) - Two piece top set fitted with a 3.7mm internal bushing and already fitted with a Rolle Pulla. Designed for medium strength elastic, ideal for F1 and other smaller carp. Carp Kit 2.4m - Two piece top set fitted with a 4mm internal bushing and already fitted with a Roller Pulla. Super strong top set designed to handle hard fighting carp and heavier elastics. F1 Short Kit (Standard and Gray) - One piece, 1.85m long top kit that already includes a 3.7mm internal bushing and Roller Pulla. Designed for targeting F1 and other smaller carp.