Hand Carved from Ebony Wood. Sizes may have a tolerance of +/- 1mm. Plugs are measured by the string wrapping method. A string wrapped around the circumference of the coffin shaped plug is equal to a string wrapped around the circumference of the same sized round plug. Made from natural materials so there may be variances in wood grain/pattern. LIMITED QUANTITIES/SIZES. Sold in pairs. Quantity 1 = 1 pair.