Round-cornered 16mm Chessex dice. The '1' side of each has the custom 'F-Bomb' symbol in white etching, while the other pips are the standard colors for their respective styles.
The mix of colors and styles of the 6 dice varies greatly - you may receive Chessex's Gemini, Scarab, Borealis, Vortex, Velvet, Lustrous, Cirrus, and/or other styles.