SBDs (Pack of 2) 2-3/4" OD Vinyl Round Cap"VC-2750-16-ID 2.750" - Depth 1" Flexible End Caps-Bolt Screw Rubber Thread Protector-Safety Cover Pipe Post Tubing Rod Cover. Made in USA by Caplugs   Pliable Vinyl End Caps can stretch up to 1/16" larger for a snug fit without tearing, splitting, or shredding Made in the USA by ISO 9001 Certified CAPLUGS | Soft PVC "rubber like" that will hold up for years of use. Easy to use - push on, pull off Durable protective closure Reference your inner diameter to select size. Select the size that matches or is slightly smaller than the pipe or tubing outside measurement .