The Burg-Wächter GKM 1.5m security kit is ideal for securing you valuable bike or belongings. The chain is made from case hardened steel which is hacksaw and bolt cropper resistant. 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. Thr ground anchor is also hardened steel & is provide with tamper proof floor fixings. The chain is Sold Secure Gold & the lock and ground anchor Sold Secure Diamond insurance rated for cycles. GKM 1.5m 10mm Hardened Steel Security Chain 100D 16mm Double Bolted Hardened Steel U Lock GA1 Hardened Steel Ground Anchor 1.5m Long, Ideal for Securing Multiple Bikes to One Fixing Point Hardened Steel Chain for Maximum Protection from Attack Supplied with Flexible Polyester Black Sleeve to Prevent Scratches & Damage to Belongings Heavy Duty 100D U-Lock Ideal for Securing up to 12mm Chains & Cables...