5 Phase stepper motor - Vexta / Oriental Motor Company model no .: A3973-9215 0.72° / step 2 Adc 0.5 Ohms great for precision CNC / positioning project. VERY accurate, VERY LOW vibration when compared to a standard stepper. 8mm shaft with two flats approx 20mm long , 4 x M5 threaded mounting holes on 50mm centres. 60 x 60mm body. 5 wire to molex type 6 pin connector. Status: as new item, fully tested 14/3/14 , came in sealed bag from factory stores, looks brand new, doubt if this has ever been fitted, probably a spare thatr never got used. massive price reduction. ***** BARGAIN PRICE FOR THIS PRECISION PART ****** Joke time : Great for anyone that has ever watched the film "spinal tap" this one does not goto to 3 but to 5 !