Screw hole pition =for ZERO W main boa hole pition, with screw M2.5X3.< />The top opening has a circular hole and a square hole, which can be opened manuy accoing to the requiremen. There is a row of LED can be to view the of the boa.< />The side opens with a camera line opening to facilite the contion of the camera< />The other side is ped with TF Ca window, easy to plug the TF Ca< />There is a +OTG+USB ply opening on the front, easy to use< />< />Colour:< />:Aluminum oy< />Size:7.3 x 3.3 x 2.3cm< />< />Paage Conten:< />1 x Aluum oy CNC Case< />Pls Note: only case, not including for ZERO.< />< />Only the above paage content, other produc are not included.< />Note: Light reflion and different displays may cause the color of the item in the picture a lite different from the real thing. The measurement owed error is +/- 1-3cm.