Sold secure gold rated give yourself peace of mind at the office cafeacute or in the shops with the tough oxford alarm d max d lock this alarmed d lock lets everybody know when your bike is being tampered with thanks to a very loud 120 db alarm the d lock itself is sold secure gold rated so you can be sure yoursquore getting the best security gold rating is the highest security accolade a bike lock can receive and is very insurer friendly key features hardened steel 14mm shackle bui