So while looking online for exhaust pipe, I keep running into this stuff called flex pipe or flex connector. Is it really 'flexible'? Can it be bent to account for slight misalignment of DIY exhaust systems? Could it be bent for say a 45 degree angle? For that matter is it even bendable at all?

Speaking of 'bendable' pipe, I emailed one reseller and asked if their 'bendable' pipe was really bendable and the answer was no. I then asked why it was called that, still no answer.