These are Grover-style locking tuners. I'm listing them as "Grover?" because this is the first time I've seen this type of locking tuner from Grover. If anyone knows for sure, please let me know. I was told they were removed from a Les Paul that was purchased used. The color is likely nickel. Please confirm in the images. There are scratches, corrosion, and yellowing. Mounting screws are included, but there are only 5. The screw heads are somewhat stripped. I cannot answer questions about installation or compatibility. Please understand that there may be overlooked details besides what is described and shown in the images. Please be sure to check the images of the item and purchase only if you are satisfied. Please refrain from purchasing if you are a perfectionist or overly concerned about the condition, as this is a used item. Please refrain from purchasing if you are not satisfied or have any concerns. No returns accepted.