Brief XB2 2.0mm dense aluminum framework works for tracks where more security is important. Suitable for medium to high traction tracks. The 1-piece framework design with extra flex characteristic produces more basic traction and improves steering. Features extra 4 holes to include extra stiffener to cut back laterally framework flex. This improve rotation and accuracy on more impressive range. CNC-machined from top-notch Swiss 2.0mm 7075 T6 aluminum.