The K-Traz U11 is a U-lock that provides enhanced locking using 2 levels of security. Fitting to the bike is quick and easy using the mount frame (included) that can be used on any tube from 26 mm to 32 mm in diameter.
Features

Z safe: Powerful double locking system. High resistance against impacts and twists
High resistance: Tensile and torsion strength. Antitheft and anti drilling

Specifications

Level of security: 11 - For areas with a very low risk of theft
Material: Hardened Steel
Mounting: Adjustable on down tube - Dia 25mm
Dimensions: 165 x 287 x 36mm
Dia: 11mm / 0.4"
Keys: 2 included