On the Roadster models with the air filter box, under the seat, converted to a storage compartment, I carry a flat repair kit complete with a mini compressor, tire pressure gauge, metric allen and torx wrench kits, bike specific metric spanners, spare bulbs, an emergency mini start up battery with led light (for long trips), spare fuses, screw drivers (flat/Phillips), 10 inch adjustable, several cable ties, several small jumper cables. Probably forgetting some stuff but this all fits in that hole. I have shoved a spare clutch cable in there also at times.