Buy from Amazon.com : http://fave.co/1EzpNCN <br /><br />Manfrotto 520BALL Half Ball Leveler with 3/8-Inch Screw for 75mm Bowl Tripods<br /><br />Product Description : <br />Manfrotto 520BALL Half Ball Leveler with 38-Inch Screw for 75mm Bowl Tripods