Very little use. The shaft length is 30mm long and will fit the goblin570 or stretched 570 turning 600mm blades. Continuous power at 3900watts , peak at 7500watts. Included 1 x new set of genuine bearing, 2 x new sets of ceramic bearings. Included are new 5mm bullet connectors and glue lined heatshring and mounting screws. If you prefer I can solder the connectors on for you just ask. Must sell!