This is a case for the RR-Net Mk3 Ethernet interface card, when using the cartridge in "stand-alone" mode. Although this can be used with other devices (such as the Turbo Chameleon 64 by inserting it inside the cartridge), this device can also be used as a stand alone cartridge. This case is for that purpose.
This case requires a 1.5mm allen wrench. If you don't already own one, you can include one with your order : http://corei64.com/store/products.php?43&cPath=11
Additionally, if you use our heatsets and screws, this case will require a 1.5mm allen wrench. If you don't already own one, you can include one with your order : http://corei64.com/store/products.php?46&cPath=12