Respirator filter adapter

It's a adapter to fit filters from other brand of respirator mask, but I can't remember brand names now ( MOLDEX or something like that, it's a full mask, and i needed to fit half mask's filters). I thought it may be useful for someone.

IF YOU ARE NOT SURE IT'S AIR-TIGHT STOP USING IT IMMEDIATELY!

I CAN'T ASSURE IT WORKING 100% AS INTENDED, AND I TAKE NO RESPONSIBILITY FOR ANY HARM IT MAY CAUSE WHEN USED CARELESSLY.