These skins of various thicknesses are sold at a reduced price in packs of 10 and are aimed particularly at experienced builders and repairers. They are described as ‘second choice’ because of minor cosmetic or technical defects (scars, holes, badly placed warts, etc.) that have no effect on their quality or the sound of your instrument. They can be mounted without risk on djembes or drums, as long as you know how to locate the usable part.