Oxford LK397 Brute Force Ground Anchor. Motorcycle Motorbike Bicycle Ebike Security/Wall Anchor, BlackThe Oxford Bruteforce Anchor is made of hardened steel which provides a safe anchor point when fitted to suitable floors and walls. Designed to fit all Oxford chains and now Sold Secure Motorscooter SILVER & Bicycle SILVER approved. Attack tested hardened steel bolt down anchor for floors and walls Can be used with all Oxford chains up to 12mm diameter and all cable locks Bolts protected by ball bearing and then covered when a lock is being used All