Datadart Lumos Darts – Steel Tip – 90% Tungsten – 24g. The Lumos is a straight barrel dart with a bullnose front, incorporating two distinct grip styles, radial grooves at the front and ultrafine radial grooves toward the rear. Finished in black electroplating, providing a sharp contrast to the natural tungsten, creating a striking aesthetic. Finished with a laser-etched Datadart logo. Datadart Lumos Darts – Steel Tip – 90% Tungsten – 26g. The Lumos is a straight barrel dart with a bullnose front, incorporating two distinct grip styles, radial grooves at the front and ultrafine radial grooves toward the rear. Finished in black electroplating, providing a sharp contrast to the natural tungsten, creating a striking aesthetic. Finished with a laser-etched Datadart logo. Datadart Lumos Darts – Steel Tip – 90% Tungsten – 28g. The Lumos is a straight barrel dart with a bullnose front, incorporating two distinct grip styles, radial grooves at the front and ultrafine radial grooves toward the rear. Finished in black electroplating, providing a sharp contrast to the natural tungsten, creating a striking aesthetic. Finished with a laser-etched Datadart logo.