Look at this: This humburg lock is a wonderful tool for anti theft and the best choice for cyclists and bicycle holders!<br><br><strong>Features:</strong><br>The lock body is mainly made of zinc alloy， high-strength and ultra durable.<br>Its compact design is for carrying convenience.<br>Wins the 2011 Reddot design award.<br>High security and drill-resistant lock cylinder.<br>East to install on bicycle handlebars， and seat posts.<br>One lock can lock more than one bike.<br><br><strong>Specifications:</strong><br>Color: Black<br>Lock material: Zinc alloy &amp; ABS<br>Key material: High quality steel<br>Lock size: 7 * 5cm / 2.76 * 1.97in (D * H)<br>Lock weight: 515g / 18.18oz<br>Package size: 12 * 7.5 * 5.5cm / 4.72 * 2.95 * 2.17in<br>Package weight: 648g / 22.87oz<br><br><strong>Package List:</strong><br>1 * Lock<br>3 * Key<br>1 * Fixed Seat<br>1 * Allen Key