This set includes 5 pairs of Lykke Flights 3.5" stainless steel interchangeable needle tips in sizes 2, 2.25, 2.5, 2.75, and 3 mm (US 02.5). It also comes with 3 flexible steel cords in 16", 20", and 24", plus 2 connectors, 2 tightening keys, and 4 end stoppers.