[DRG]

When they were put in I was provided with a Polish site giving info but that was lost with a HD crash a year ago

That wiki article translates ( badly ) to

Air Mouse 2 - German bomb debris wagomiaru 1 kg. Large quantities of these bombs zdobyto to calm at the time of the creation of Wielkopolska Poznan Ławica airport and were then used by the Polish air force. Myszka No. 2 airline had cylindrical shell filled with spherical bottom lanym trotyl or pikrynowym acid. In the top of the screw was a bomb detonator and weighing 0.37 kg protected tab (zawleczki were manually removed prior to take-off aircraft). Bomba was transferred in the form of cassettes bombowych box. In the second half of the 30 Air Mouse 2 has been replaced by the built in mouse wz. 34.