Introducing the "Justmeat" series that uses Aodamo that is also used for baseball bats with a slim narrow axis. The smart size is about 0.04 inch (1 mm) thick than the slim size, and the weight is about 0.04 oz (1 g). Product size: Total length 5.5 inches (140 mm) x shaft diameter 0.4 inches (11Weight: 19.7g