Abus Microflex 690 Armor Key Bicycle Lock (15mm x 2.5-Feet) 15mm overlapping steel shells protect the inner steel cable PVC coating protects the frame Two keys provided with lock Hardened Steel Shell Protects a 15mm Steel Cable Keyhole Cover with Coded Reversible Key Hardened Steel Shell Protects a 15mm Steel Cable Kehole Cover with Coded Reversible Key Integrated Carrier Attaches to the Frame or Seatpost Bolt