summary from Kryptonite...
The ultimate Kryptonite U-lock for bicycles, eBikes and powersports
Features:
- 18mm hardened max-performance steel shackle resists bolt cutters and leverage attacks
- Oversized, patented*hardened steel sleeve over crossbar for double security
- Double deadbolt locking for extensive holding power
- High security disc-style cylinder
- Center keyway defends against leverage attacks
- Protective vinyl coating
- Sliding dustcover protects and extends cylinder life
- 3 stainless steel keys – one lighted with high intensity led bulb & replaceable battery
- Key Safe Program
- Product dimensions: 10.3cm x 26.1cm
- Product weight: 2.76 kgs