Material: 316L stainless steel
Make sure the key option you order would be matched to your cage's lock.if you have any question,please contact for inquiry before order.
Especially for the option"for the common lock cylinder" ,the key/lock you have should be different with mine,if you still want to use your own lock cylinder,you can leave a note to specify you don't want key to be inside the pendant,Then I would send only the pendant without key inside,and attach an instruction to teach you how to cut your key and fix it inside the pendant.Or if you want to use mine lock cylinder to replace with your lock cylinder,then no need to leave this kind of note.
Once Again,the most important thing is to make sure the option you order,its key/lock can be accomodated with your device.(you can measure your lock cylinder's length)
A necklace will be attached, but because of different personal aesthetic needs, more likely you would use this pendant with your favorite necklace.