The Burg Wächter 100D U-lock is a heavy duty lock ideal for securing up to 12mm chains and cables. The body of the lock is made of hardened steel and the 16mm shackle is made of case hardened steel, both providing tough resistance to attack. The shackle is secured by a double bolted disk mechanism locking both ends and can be completely detached from the body of the lock when unlocked. The lock is weather resistant and suitable for outdoor use, with a keyhole cover protecting the internals. Keyhole Cover Rotates to Stop Rain & Dirt Entering The Lock Mechanism 16mm Thick & Case Hardened Steel Provides Excellent Strength Against Attacks Rubber Protector Stops Scratches & Marks When Securing Items Strong Disc Locking Mechanism Durable Weather-Resistant Sold Secure Diamond Rated for Bicycles, The Highest Security Rating Sold Secure Gold for Use with Motorcycles Secured by Design Police Preferred Accreditations Required for House & Bike Insurance Keyhole Cover Rotates to Stop Rain & Dirt...