SBD

2-3/4” Square Tubing OD 2.75 Inch (70 x 70 MM 6 to 9 Ga Rare Size for Thick Walls 3.6 to 5 MM) fit Inside Dimensions ID from2.5/16” to 2.3/8”. Heavy Duty Rare Size Square...

4" x 3" Rectangular Caplugs USA Make (6-8 Ga Steel (Fits 3.60"-3.67" L- 2.60"-2.67" W ID) | Heavy Duty Lamp Post  FENSING Pole Insert. Fitness Equipment End Caps. | by SBD 4" x 3 "...

100 MM (3.937") OD Heavy Duty Round LDPE Tubing Plug-End Cap 4-7Ga 0.177 to 0.236” Wall Thickness | ID Grip Range from 3.464 to 3.584” Rare Size Made in USA by SBD

3 1/2" (90MM) Round Plastic Tubing Plugs | Genuine Caplugs USA Make CCF-RT-30-3 | 7-12 G - End Caps by SBD