Genuine Bach trumpet, 180ML round crook tuning slide. Silver-plated finish. This is a used item, so there are some scratches and plating wear, but it is relatively clean. Upon listing, the water key cork and spring have been replaced with new ones. Adjustment may be necessary depending on the instrument it is used with. Trumpet Bach Vincent Bach 180MLS 180ML37SP Main tuning slide Tuning slide Round crook Square crook Genuine parts