EQIIO Folding Bicycle Combination Lock & Alloy Steel Heavy Duty Anti-theft Bicycle Lock for Your Bicycle Security Highly secure mini portable bike lock Bike lock weighs only 1.58 pounds, lightweight and easy to carryChain length 78cm/30.7inch, Link thickness 0.19 in/5 mm, folded size: 1.8in*1.8in*3in, Long enough but not too heavyCombination of strong alloy steel and special hardened ABS material, waterproof, anti-scratch, anti-smash, sturdy and durable4 personalized number combinations, you can set up your own number passwords, can set up to 1000 different password combinationsFoldable, space-saving, fits in the included bike lock mount or in a backpackSturdy and durable zinc alloy + stainless steel lock cylinder material, instead of the general key lock cylinder, better prevent lock picking Wide range of uses: for bicycles, scooters, motorcycles, electric vehicles, gates and fences, grills, ladders, etc.