This is a cymbal attachment made by TAMA, equivalent to the MCA63EN. I purchased it around 2010. I don't have the original receipt or instruction manual, so the exact model number is unknown, but based on the stepless angle adjustment and shape, it's presumed to be the MCA63EN. I've used it for many years, but I've taken good care of it, so it's in good condition with few scratches or stains. Due to a change in my equipment setup, I won't be using this attachment anymore, so I'm putting it up for sale.