we are offering 300w 48v dc spindle. specifications model : ts-01 power : 300 w electrical specs : 12v-48v, 6a dc dimensions : dia: 53 mm, len: 170 mm collet : er11 chuck weight : 1.4 kg cooling : air cooled visit http:www.tinycontrols.comhigh-speed-spindle-motors.html for more spindle motors.