Kinbar top security alarm padlock.Auto Alarming and Locking System 110db Loud Alarm Siren FunctionHardened Zinc Alloy Body Dual Shock & Movement Sensor Tamper Proof BatteriesHot Processed Hardened Steel Shackle diameter 10mm Anti Twist Anti Cut Double Side Removable Shackle3x High-Security Cut Keys - Cannot be Copied Kinbar top security alarm padlock.Auto Alarming and Locking System 110db Loud Alarm Siren FunctionHardened Zinc Alloy Body Dual Shock & Movement Sensor Tamper Proof BatteriesHot Processed Hardened Steel Shackle diameter 10mm Anti Twist Anti Cut Double Side Removable Shackle Kinbar top security alarm padlock.Auto Alarming and Locking System 110db Loud Alarm Siren FunctionHardened Zinc Alloy Body Dual Shock & Movement Sensor Tamper Proof BatteriesHot Processed Hardened Steel Shackle diameter 10mm Anti Twist Anti Cut Double Side Removable Shackle3x High-Security Cut Keys - Cannot be CopiedKinbar top security alarm padlock.Auto Alarming and Locking System 110db Loud Alarm Siren FunctionHardened Zinc Alloy Body Dual Shock & Movement Sensor Tamper Proof BatteriesHot Processed Hardened Steel Shackle diameter 10mm Anti Twist Anti Cut Double Side Removable Shackle