... 3 hooks ;1zinc alloy ,2 steel 2)Outside diameter 3.5mm inside diameter 3mm 3)length; ... Key type Laptop lock , mster key type laptop lock ,digit type laptop lock ,I pad lock and combination lock etc.Material ... before shipment by T/T.APPLICATION :our laptop lock has slender cable, suitable for all laptop, desk ... and hold the small circular button of the lock, and release the button after setting new ...