ROLA 59829 Removable Rail Bar RB Series Roof Rack for BMW X5 Lightweight high strength aluminum cross bars Custom fit vehicle application for superior style ; Buffer strip - protects load and crossbar ; Universal T-slot - for mounting various accessories Anodized aluminum cross bars, with rub strip and stainless steel hardware for long life Anti-theft features like lockable covers ; Unique key protects roof racks Limited 5 year warranty