Interbusiness 2 inch Aluminum Alloy Dart Rod Standard Spiral 2BA Caliber 30pcs Red Aluminum alloy dart rod for 14g / 18g / 24g / high grade tungsten dart / aluminium alloy dart Total length: 53mm / 2 inch Diameter of thread : 4.5mm / 0.177 inch We offer 7 colors of this kind of dart rod : Black, Red , Dark Blue , Sky Blue, Yellow, Green, Purple Notice : Because of the different caliber of the dart, make sure that this dart rod matches your dart