Ibikoresho: ibyuma bikonje bikonje
Diameter izengurutse: 12mm kugeza 100mm
Umurambararo na diametre y'urukiramende: 12x12mm kugeza 100x100mm;8x16mm kugeza kuri 50x100mm
Umubyimba: 0.8mm kugeza kuri 2.2mm
Gushyira mu bikorwa: umuyoboro wibyuma nibindi bikoresho byubatswe.
