Bottelsen Hammer Head Steel Tip 95% Tungsten Devastators Black Steal 9/32-Inch Diameter Dart Package in a Deluxe "Croco" Case Features 90% Tungsten Barrel Anodized Aluminum Hammer Head Spinning Shaft with O-Ring Model Number of 23,25 and 27 gm are 23ED5, 25ED5 and 27ED5