OP - THE KNOCKOUT Glasses Available in both 14mm and

Available in both 14mm and 18mm so please choose which size you need

Its angled mouthpiece acts as a splashguard

so they are virtually indestructible

easy space saver on displays

OP - THE KNOCKOUT Glasses Available in both 14mm andThe Knockout was created to take your party to a new level. It attaches to any bottle to let you chug and smoke at the same time. The Knockout is easy to use and travel friendly. Turns any bottle into a Beer Chugger, Water Pipe or "Knockout" (Beer Gravity Pipe), Comes with a travel baggie, Disassembles to fit in your pocket, Easy to clean and dishwasher safe, Made from high quality materials; food grade silicone and stainless steel. GRIP IT. FLIP IT.