-Madera is a bi-product of Profile Racing for those who want a quality American made product but are on a budget. Protocol's have black tubular chromoly arms and a 3/4" 48 spline chromoly spindle with your choice of an American or Mid bottom bracket and are left and right hand drive compatible. Installation/removal tool included. Available in flat black only in 175 or 180mm lengths. Weight: 40ozs..