This 1” plug for hot tub plumbing has a spigot (SPG) end and is made by Dura Plastics Designed to fit inside a coupling or plumbing part referenced as having 1” slip end. 

It Does not fit inside a 1” flex or rigid pipe for pool or hot tub applications.

• Manufacturer P/N: 449-010
• Type: Plug
• End: 1" Spigot
• Material: PVC
• Wall Thickness: Sch 40
• Max Temperature: 140F
• Colour: White
• Material: PVC
• Application: Pool and Hot tub plumbing