The "New York Fahgettaboudit Mini" U-lock by Kryptonite, weighing 4.55 lbs, with 18mm hardened steel, has the a 10 out of 10 security level according to the manufacturer, in Dec. 2015 Stock Photo - Alamy
Evolution Mini-5 - New-U
Kryptonite U-Lock Evolution Mini - 9 | Maciag Offroad