Abus Ultra 410 U-Lock - 3.9 x 5.5" Keyed Black Includes Cobra cable Model-Power Adventure TS TLR The number and letter refer

The number and letter refer to the mm offset and direction from the mounting face to the centerline of the teeth:

Suitable for: front axle with 5 x 100 mm QR x 12 x 100 mm thru axle

Debonair (27") 38mm description 1

Vault hubs with wide bearing stance for reduced radial loading

Abus Ultra 410 U-Lock - 3.9 x 5.5" Keyed Black Includes Cobra cable Model-Power Adventure TS TLR The number and letter referAbus Ultra 410 U Lock 3. 9 x 5. 5" Keyed Black Includes Cobra cable. The Ultra 410 features a 12mm double bolting temper hardened steel shackle providing protection against cutting and torsion attacks in a simple design. It includes an easy to mount rattle free bracket and comes in a variety sizes and packages. 12mm thick round temper hardened steel shackle Pass through double bolting steel shackle provides anti twist protection Easy to use mounting