<strong>Milwaukee Bicycle Co.</strong> <strong><span>Blue Collar Cog</span></strong><br /><br /><ul> <li> The <strong>highest quality</strong> track cogs turned from 4140HT steel</li> <li> Machined to ISO specifications</li> <li> Gas nitride treated to increase hardness and maximize wear resistance.</li></ul><br /><span><strong>Made right here in Milwaukee, Wisconsin!<br /><br /><span>*12t requires "stepped" lockring like our Milwaukee Bicycle Co lockring - see related products to the right</span><br /></strong></span>