Linear Motion Guide Actuators Packing Content: 1 pc sfu2005/sfu2010 ballscrew 1 pc HM15 motor bracket 1 pc bf15 support 1 pc dsg20h nut housing 1 pc LF30*40-12*14 (with 5mm keyway) Model Number : SFU2005 SFU2010 Guide Width or Diameter : 20mm