Description: UniversalUniversal battery safety lock with keys, applicable for electric bike, folding bikes, etc. Cable Length: 15cm/5.91inch; Core Diameter: 2.6cm/1.02inch. Battery Box Lock with 2 KeysBattery box lock design, convenient to directly lock the battery, prevent the battery from being stolen, safe and practical. MaterialThis battery box safety lock is made of metal material, which is durable and sturdy. Easy to InstallThe battery safety lock design is simple, easy to install, and can be installed without a professional. Wide ApplicationIdeal for electric bicycles, motorcycles, sports equipments, gates and fences, and lawnmowers, tool boxes and ladders. Specification: Material: Metal Cable Length: 15cm/5.91inch Core Diameter: 2.6cm/1.02inch Size Chart: Size Options: Small Head: 4.4cmx1.95cm/1.73inchx0.77inch Medium Head: 4.4cmx3cm/1.73inchx1.18inch Large Head: 4.4cmx3.6cm/1.73inchx1.42inch Package Includes: 1 Set Battery Box Safety Lock with 2 Keys Note: Please allow slightly errors due to manual measurement and different monitors.