10Pcs Pin Keepers Pin Safe Locks Pin Backs Clasp Locking Pin Keeper Backs Brooch PIn Locking Pin Backs With Wrench Tools<br> Feature<br> Each pin keeper is approximately 5 mm in diameter, 6 mm in height<br> These bulk pin backs are made of nickel-plated copper, durable and anti-rust.<br> Smooth surface, sturdy and lock your pins firmly,<br> without worrying they will fall off and provide you replacement to the torn screw or wrench locking mechanism;<br> Keep your objects in place during important moments.<br> Don't lose any of your pins, keep them secure by locking them in place with this handy set.<br> Small screw pre set in for you. No more small parts to mess with.<br> How to use:<br> Put the black screw into the middle hole,<br> then use a small wrench to screw half of the black screw to ensure that the fixed,<br> fixed into the brooch or medal needs to be fixed to the other two ends of any small hole,<br> then use a wrench to tighten the black screw gradually, to ensure that the fixed.<br> Item Type :Pin Keepers<br> Material:Brass<br> Color:Silver,<br> Size:<br> More detailed,please see photo.<br> Quantity:10 Sets.<br> <br> Note:<br> Size for manual measurement, there may be a 0 to 3mm error, belongs to the normal phenomenon.<br> And due to the difference between different monitors, the picture may not reflect the actual color of the item.<br> Thank you<br> <br> Package includes:<br> 10 Sets x Pin Safe Locks.