Knurled Leveling Knob

This knurled knob for slipping on a ~0.5" brass M3 threaded standoff is a replacement for the wing nuts typically used to level build plates on FFCP/FFCX printers. It is easier to locate by feel due to its length and you don't have to twist your hand like you do to twist a wing nut. Rolling it between your fingers is faster than twisting a wing nut, too.
ETA: used these standoffs from ebay
http://www.ebay.com/itm/10-pcs-M3-x-12mm-Brass-Hex-Standoff-Pillar-Female-Female-AK-Cheap-/171504778699?h