The No.69 has a body completely made of bakelite. The only metal parts are the internal fuze components. The detonator had to be inserted before use, and these were therefore packed seperately in the box with the grenades. Shrapnell that came off this grenade when it exploded was not really harmful, as the bakelite parts quickly lost speed. The fuze components had more mass and were the most dangerous when the body exploded.