Plastic Impact Bomb
A piece of the plastic with detonator inserted molded to a lock in the CONTROL Training School file room.
Seen in Episode #3: "School Days"
Kind of device Weapon
Organization CONTROL
Used by Maxwell Smart

Plastic-type explosive described as "harmless" since its impact will open anything without destroying the surrounds.

Once the material is molded to the target a detonating device must be inserted an activated before it explodes.

Maxwell Smart uses it to obtain access to the files at the CONTROL CONTROL Training School without revealing that he is there undercover.

[Episode #3: "School Days".]