Premium T6063 grade aluminium donuts from AeroflowPerformance are used to gain atighter radius bend than the mandrel-bent tube. Primarily used for tight/compact installations which make it perfect for that custom Intercooler or Exhaust systemsthat require tight bends and corners. The donut can be cut at any degree of bend needed. These donuts will not corrode or rust like coated or paintedsteel pipes and are much lighter than stainless pipes. Aeroflow's aluminium, when welding produces contaminant free beads, for a show qualitywelding job! These donuts havea thick 2mm wall and are sold either by the half or completefull donuts that are welded onthe outside only. Available invarious sies and all have a 0.75:1 radius.