Aluminium Donut Halves.
Used for intercooler pipework, radiator necks etc, to get a tighter radius than you can with a mandrel.
Require welding. Can weld donut halves for you here, contact us first here. (costs extra)
Choose from the drop down menu your Outside diameter, and long or short radius.
Sold as one half. You will need 2 for a complete donut.