Keep egg shells from cracking when boiling eggs by piercing a small hole in the shell.Simply set the wide end of a raw egg in the spring loaded platform and gently press down to pierce the egg shell.Measures 2.25 inches in diameter by 1.25 inches tall.Made of highly polished 18-10 stainless steel in a plastic base for long-lasting use.Dishwasher safe. Place securely in dishwasher securely for easy cleaning.