Fits 2.5 & 5 gallon carboy containers with 70mm opening; Commonly used with fire foam & recycling containers; Makes pouring chemicals safer & easier; Air tight re-sealable screw on cap; Washable & re-usable; New AIR VENT technology for smoother pour; Swivels to pour safely in any direction; Withstand temperatures up to 248°F
Thanks for reaching out to Tundra Restaurant Supply with your question Rick.
I can't be certain about a 5 gallon plastic paint bucket, or which YouTube video you're referring to, but this Smart Spout SMRT1-R-70MM Universal 70 MM Red Carboy Pour Spout w/ Vent fits the Carboy 2.5 and 5 gallon. They've both got 70MM openings.
Is there a particular product you can refer me to so I can see if it fits?