Folding Combination Lock Electric Bike Y and Z spec is

Y and Z spec is for racks that were sold between 2017 - Current

Distance between bike support arms: 13"

Threaded cone shaped cap with a 5mm head and 6mm thread

Not to be used with any Hitch Extension longer than 8"

U-Bolt: ½ inch high strength steel

Folding Combination Lock Electric Bike Y and Z spec isOur folding combination lock is made of high strength steel. It is coated with ABS plastic to ensure that it will not scratch the paint on your bike. The lock unfolds to be 86mm and can be attached to a bike parking rack or any other bar or pole. We include a mounting bracket with hardware and straps to secure the lock to your bike. 3. 5mm Thick steel with ABS coating Extended size: 86mm (34") Includes bracket and hardware to attach to bicycle