High-quality material, extremely well made and impeccable craft Low mutual opening rate, multiple anti-theft Inner diameter 4.5mm thickened steel cable, high toughness, anti-knock, anti-saw and anti-smash, safe and reliable ABS skin with zinc alloy lock core, strong and heat resistant Locking without key, one lock, freely retractable, farewell to cumbersome Flexible and convenient Safe and reliable Solid and firm B-class lock GB national standard certification QB industry standard certification