Abstract: A fastener connects an insert to a hollow tube. The fastener is formed to have a yoke portion extending between a pair of arm portions, all of which are formed arcuately to conform to the shape of tube. Arm portions have arcuate free ends with horizontally oriented seams. Arm portions include protuberances which then may be cammed between an engagement position with edges of openings in the tube and edges of a cavity space in insert and a disengageable position between the edges. The fastener includes a lifting handle that is spaced away from the tubes surface to form an access gap.