90 Degree corner bracket for 30x30mm Alluminium T-Slot extrusion

90 degree corner bracket for 30mm alluminium t-slot extrusion with 8mm wide slot. Mounting holes are to suit 6mm bolts. Has 8mm wide lugs to keep the bracket square to the extrusion. My blog showing where they are being used on a delta Printer build is here http://d3delta3d.blogspot.com.au/