POP in closures for pipe and tubing ends. Retaining fingers without locking steps provide friction fit and allow removal of plug. Bumper protection. Flat, matte finish head. Multiple sizes for use in .250" (6,4 mm) to 2.50" (63,5 mm) diameter holes for panel thickness up to .250" (6,4 mm). Approximate Head Thickness: .062" (1,6 mm).