Italian M35 Grenade - INERT, OTO (fragmentation and concussion). The Italians had 3 styles of hand grenades they used regularly during WWII, all of which were given the designation Mod.35. Bright red in colour and a bit unreliable, the British in North Africa (1941-1942) would find these things in an unexploded condition and eventually nicknamed them "Red Devils". The first of this series of three was the OTO. The second, and a bit more reliable, was the BREDA.