This is a longer version of the Z micro-switch holder, for use with our manual bed leveling system. In the end we overestimated it, and manually cut it to the point where the diagonal ribs join the sides. We took off the roller-lever as the hinge was catching on the printed part, preventing it from moving. If you keep it, and file a little at the part, then you should not need to cut it down to height as much. . The original z nut holder that we got the dimensions from is also attached. This was from the Forums, and was designed for bed leveling the original bed, thus only has about 3mm of height play. You will want the micro-switch holder part from this, which I have cut out and attached separately too. If you use the original, please send your thanks to the forums. http://forums.reprap.org/read.php?340,308449,310087#msg-310087 Printer Brand: RepRapPrinter: OrmerodRafts: NoSupports: NoResolution: 0.25mm Layer, 0.5mm NozzleInfill: 25%