E-type snap ring E-clip E-ring Standard #0.8 E-type smallest For watch buttons Stainless steel, 10 pieces ⭐︎A retaining ring for fixing a shaft by fitting it into a grooved shaft⭐︎ For those who are in trouble because they have lost E-rings by accidentally launching them during watch repair or maintenance. ❗️Please check the size before purchasing!❗️