Its A Bend Support, But Not Ninety Degrees
I initially searched for Sioux Chief 550-M2 bend support. Supply House directs you to this product as a direct replacement. Not really, these are not ninety degrees. Not even very close. So, if you need to make a turn, great, a ninety, no. They would not work in my project. In the picture from top to bottom is Bluefin, SharkBite, then Sioux Chief.