The Bike U Lock is suitable for bicycle,motorcycle and electric mobile etc.<br/>Features:<br />Protect your bike from various methods of thief effectively.<br />Good resistant to cutting,breaking,sawing and shearing.<br />Made of hard alloy steel,it is not easy to be cut and leverage attacks.<br />Silicone outer cover prevents corrosion of water,dust and dirt.<br />Mounting bracket can be easily fixed on the bike tube(Max.29mm/1.1in) when you do not need.<br />Comes with 3 keys,you will never have to worry when you lose one.<br />Suitable for for mountain bikes,electric bikes,motorcycle etc.<br/>Specification:<br />Model: Lock Set / Lock&amp;Cable Set (optional)<br />Total weight: Approx. 790 - 1080 g / 1.7 - 2.4 lb<br />Package size: 210 * 130 * 50 mm / 215 * 135 * 60 mm<br />Package weight: Approx. 867 - 1182 g / 1.9 - 2.6 lb<br/>Lock:<br />Material: Alloy steel &#43; Zinc alloy &#43; Plastic &#43; Silicone<br />Size: 193 * 123 * 32 mm / 7.6 * 4.8 * 1.3 in<br />Alloy steel diameter: 16 - 18 mm / 0.6 - 0.7 in<br />Weight: Approx. 716 g / 1.6 lb (not include the keys)<br />Mounting bracket: Suitable for tubes up to 29mm/1.1in in diameter<br />NOTE: Please allow slight measuring deviation due to manual measurement.<br/>Package List:<br />1* Lock<br />1* Mounting Bracket<br />3* Keys