Anti-theft design: Sturdy PVC wrap and internal steel wire, with smooth cutting technology, enhances brake lock security, preventing cutting or prying by thieves. Longer and thicker design: The disc lock reminder steel cable has a 3.5mm wire diameter, preventing scratches during use, and the coiled design allows for easy storage when not in use. This small reminder cable helps remind you to lock your bike and reminds you that the disc lock is installed, preventing you from starting your bike and causing damage. : Simply attach it to the brake, providing a visual reminder of the disc lock. Prevents potential damage and embarrassment caused by riding with the disc lock engaged.