3 locks in one. Maximum-security Gold Sold Secure rated Chain and D-Lock combination designed with E-bikes in mind. The 10mm hardened-steel noose chain mates with the 14mm hardened-steel DX shackle to give an extended-locking length, making it easier to secure larger frames. The included Z LOK provides further security for luggage and accessories. 3 x coded replaceable keys and Hiplok Lifetime Warranty guarantee included.