In 1935, just prior to World War 2, the Italian Army adopted three infantry hand grenades under the Modello 35 ("Model 35") designation and these were then delivered through three Italian concerns - SRCM, OTO and Breda. The most successful - though tactically limited - became the SRCM Modello 35 while OTO and Breda each brought their own designs to the table. All used TNT filling with shattering bodies for fragmentation and all were produced in full-charge High-Explosive (HE), low-charge HE, practice and smoke variants. Full-charge versions were coated in all red while low-charge forms featured a red stripe. Practice versions were all-black.
The Breda design had more in common with the OTO offering than the SRCM. Overall weight was 200 grams with a 60 gram TNT filling. Length of each unit was 97mm with a 53mm diameter. The action was conventional, with a primary safety pin being removed prior to throwing. Once thrown, the safety cap fell from the grenade and pulled a safety rod, leading to the grenade's activation. The grenade then relied an impact-based detonation which proved unreliable. The fragmentation came from the lead shot fitted to a small lead ball within the body of the grenade.