Darts : 2 no’s supplied with equipment. Dart Falling Heights : 220, 660 & 1524 in mm. Weight Box : 5 to 500 grams incremental loads. Dart HoldRelease System : Electromagnet with “0”, Noise + “0” Vibration. Start Command : Paddle Switch. Vacuum System : In built + Noise less. Vacuum Range : 760 mm of Hg. Counter : Digital with memory back up. Shaft Length Adjustment: Easy with accurate alignment. Supply : 230 VAC50 Hz.