Type 14 Magnetic/Anti-Tank Mine

The Type 14 Magnetic/Anti-Tank Mine is a UNSC explosive ordnance.

Background
It's used as both a mine and a satchel-charge type bomb. The arming fuse can be set for five, ten, or fifteen seconds, and has massive area of effect damage. The magnetic attachment device ensures that it will attach to a vehicle which passes over it.

Trivia
This is also used in Assault-type games from Halo 2. Additionally, it is used to portray Andy in the machinima series Red vs. Blue.