They have a nice cut-off, much better than the whistlers Brian2006 sold me!
They were broken half way when I got them so I decided to rear-end someone and break them completely!
Got my spacers at Lowe's. They carry them at HD but they were out.
No flashing at all, they may be actually aimed a little low. We spent about an hour aiming, including drive-bys.
Can't complain at all for the money.