My left bumper on my old model 1537 Xbox One controller was pretty much dead, so I got these to replace it. The triggers that I was sent were white, not black. The button on the trigger is slightly wider than my OEM buttons were, so when reassembled, the left bumper needs marginally more force than the other one. Something to keep in mind for those buying, if they intend to replace only one trigger. Other than that, functions as intended :)