... a power pack, rotary micro motor,foot rheost JD800 micromotor electric power tool set, consisting of a power pack, rotary micromotor ... , a pair of collet chuck wrenches.This JD800 all purpose electric grinder of high torque and a rotary speed of 3000 ... ,000RPM ,3000 up to 25000rpm is craftsman designed and modeled.Standard accessory :Micromotor handpiece, power pack, rheosat,handpiece cradle apair of ...