The knob is painted black. Please have a look at the photo. The item "Boss Digital Modulation Delay RDD-20 Half Rack Effects Unit Tested from Japan" is in sale since Friday, October 9, 2020. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Effects Pedals\Delay, Echo & Reverb". The seller is "around-the-world_3" and is located in moriya.
This item can be shipped worldwide.