I had ordered 3 of this as I drop my vape quite regularly. I have used all of them and currently using the last one as I broke the other 2 already by dropping my vape too often. The glass fits well on the berserker mini v1.5 rta. I had no issue with any of them. All had good build quality and no leaking. I recommend this and have already ordered more. The last one seems even more durable as I have dropped it many times already without it breaking. I would advise using a protective rubber ring to make it even more durable.