They have solid brass domes and use old-fashioned spring hammers that produce a sweet ringing tone

or have a little more overlap for a more

Fits most bikes with 700c

which can be easily secured with a Restrap

Restrap's rackless saddlebag securely attaches to your seatpost for bikepacking

Restrap - City Pull Tab Beslag They have solid brass domesQuickly and easily secure your luggage from your Brompton's front carrier block with Restrap's City Pull Tab. Made from Hypalon, the strap is lightweight, easy to install and is a great accessory for those who regularly travel with luggage on a Brompton. Includes M5 fixing nut & bolt.