The FR05-X101K Cross Frame Set is for mounting RX-64 or MX-64 DYNAMIXELS side-to-back. It is generally used in conjunction with the FR05-F101K Flange Bearing Frame Set (shown pictured above)
Kit Contents:2 x FR05-x101K (Black)4 x M2.5*6 Bolts4 x M2.5*8 Bolts4 x M2.5 Nut
Note: You can view DWG files using a free download of eDrawings Viewer. Various CAD apps support STP & DWG Files.