Everything you need to repair a tube and inflate your tire on the go.
Lezyne's Twin Kit includes their Twin Speed Drive CO2 Inflator, two threaded 16g CO2 cartridges, two tire levers, and a convenient velcro/neoprene strap to hold everything securely together. Fits easily in most packs and jersey pockets.
All together, the kit weighs 162 grams.
What you need for a road ride.