Mid-size XB2 2.0mm dense aluminum framework would work for songs which more traction is essential. Recommended for low to moderate traction tracks. The 1-piece framework design with a rise of flex feature creates more overall traction and improves steering. Suitable for low to moderate traction. Features additional 4 holes to mount additional stiffener to lessen laterally framework flex. This help to increase rotation and precision on advanced level. CNC-machined from top-quality Swiss 2.0mm 7075 T6 aluminum.