Buy from Amazon.com : http://fave.co/1Beb3EV <br /><br />Vixen Optics 25051HAL130 Sphinx SXP Mount / Tripod and Star Book Ten (White)<br /><br />Product Description : <br />Carbon Steel Bearings 15 Bearings <br />Counterweight Bar 20mm Diameter Retractable <br />RA Slow Motion Axis 180-tooth wheel gears whole circle movement 72mm diameter Material Brass <br />Azimuth Adjustment Double screw Fine Adjustment Approx - 7 Degree 2 Degree per rotation <br />Maximum Loading Weight 16kg35 lbs Counterweights
