Various bits and pieces for rounding out the blackTooth laser cutter kit. X&Y end stops, a 1/4 slice of the full vent duct (the complete version was too big for my printer), and X&Y cable carrier mounts. For X, use a 7 x 7 mm carrier and for Y get the 2 inch x .75 inch carrier from BuildYourCNC. I use an aluminum fluorescent light grid for my cutting bed - the stands set the bed hight and the gauge allows me to quickly set the ideal focal point above materials.