Kryptonite New York Standard Bike U-Lock, Heavy Duty Anti-Theft, 16mm Shackle with Mounting Bracket and Keys, Ultimate Security for Bicycles E-Bikes and Scooters.

I bought a super beefy Kryptonite and never took it out of its package since it was a bit more extreme than I wanted, and missed the return window. If you’re interested, DM me and we can make a deal. It’s this model.