ETOOK ET155 Heavy Duty Bicycle Chain Lock - Secure Bike Lock for Outdoor, Commuting & Parking - Anti-Theft Bike Security for Mountain Bikes, E-Bikes & Scooters

7mm round chain,made of hardened steel.

With textile sleeve, prevent damage to paintwork..

Advanced lock cylinder technology with the key of only 0.3-0.6mm thickness, has high protection against manipulation.

With anti-slip rivet on the sleeve,in case the sleeve fall off.