FE-BC The FE-BC is just what the acronym stands for: FireEye's Big Clamp. This behemoth of a seatpost clamp features a powerful dual 8mm bolt clamp that will, without a doubt, hold your seatpost in place. It can also double as a great paper weight. What more could you ask for. Material: aluminum 6061-T6 Diameter: 29.8mm Height: 32mm Color: black / orange Weight: 55g Surface finish: sand-blasted and anodized Logo: all lasered logo