WonderFlanges are the strongest, quickest, safest and most economical connectors available for spiral pipe. Unlike an angle ring, WonderFlanges are designed to slip inside the spiral pipe. The spiral pipe can then either be welded or screwed to the WonderFlange. The 9/32” holes punched on the leg-out are intended to be used as pilot holes for TEK screws. Unlike a conventional angle ring, the holes are not meant to be lined up. WonderFlanges can be used on single wall, 1”, 2”, 3” and 4” double wall spiral pipe. Ring Midwest Metal Products to find out more about WonderFlanges and how you can save money by using them on your next spiral pipe job.