Proprietary Screw Wrench option:1 piece You can even order more

You can even order more extra base rings

The price would be 100USD for this screw and matched wrench

The three pins at the end is more tough and strong to avoid easy break cause by excessive torque

then you have 2 pieces of different size of base ring with 1 cage

If you need further security for your device

Proprietary Screw Wrench option:1 piece You can even order moreBased on 100% security requirements,BAWR three holes screw comes out, you won't find a wrench or tool anywhere else that works for "BAWR" three hole screw. The wrench material has been upgraded to a hardness of up to 58HRC. The three pins at the end is more tough and strong to avoid easy break cause by excessive torque. Please feel free to use. This wrench are not for external sale, if you are not a customer who has purchased the equipment applied