The Abus Granit X 54's 13mm square shackle is approximately 15mm in diameter, corner to corner. And the quality of steel used is extremely superior. That's why it's the only lock below 16mm to make the list.
@GA2G started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
@GA2G
The Abus Granit X 54's 13mm square shackle is approximately 15mm in diameter, corner to corner. And the quality of steel used is extremely superior. That's why it's the only lock below 16mm to make the list.