The Kryptonite Strong Hold offers an extra secure locking point for use indoors or out. The Domed shape can be driven and walked over without damage to cars and provides a convenient and consistent location for locking valuable equipment.Permanent locking point for use indoors or outdoors to keep vehicles and bicycles safeAttach to solid concrete ground/walls16mm hardened carbon alloy steel shackle5/8 cement anchor bolts installed directly into the cementIncludes 2 masonry bits (1- initial pilot hole, 1-final moly-bolt diameter)Steel shackle lays flat within a domed body when not in use, making it safe to walk or drive overRecommended for both residential and commercial applicationsProduct dimensions: 19cm anchor diameter x 4.2cm anchor heightProduct weight: 2.77kg