Special Feature ：   Professional-grade carbon steel construction, triple-hinged design, double lock mechanism, and included keysProfessional-grade carbon steel construction, triple-hinged design, double lock mechanism, and included keys
Color ：   Black
Power Source ：   Battery Powered
Material ：   Carbon Steel 
Included ： Components 

PROFESSIONAL GRADE & REAL HANDCUFFS: These handcuffs are made of carbon steel which has reached the absolute highest standards and can withstand the requirements of professional law enforcement teams, military, police, and security departments
TRIPLE HINGED: Sturdy and dependable hinged style cuffs can further restrict arm and hand movement
TWO KEYS INCLUDED: Our handcuffs comes with 2 keys so never have to worry about misplacing your key because you have a spare
DOUBLE LOCK: Double locking handcuff mechanism allows you to choose the position the handcuffs stay in and avoid injury to detainee for more security
NOTE：If you do not receive the key, please contact us, Yoghourds will provide you with 100% satisfactory service