Examples - SMOK Baby Beast TFV8 to 810 Drip Tip - Aspire Nautilus 1, 2 and mini to 810 Mouthtip | iSub V VE and G to 810 Mouthpiece | Joyetech eGo to 810 plus ALL other 510 Devices to 810. If you have a 510 eCig / Vape Pen then the usual sized mouthpiece will be 8.5mm at the plug end.
