1.Various types available: 2.Toslink plug to Toslink plug:diameter:2.2/4.0/5.0/6.0mm 3.Toslink plug to Toslink plug metal:diameter:4.0/5.0/6.0mm 4.Toslink plug to mini plug:diameter:2.2/4.0/5.0/6.0mm 5.Toslink plug to mini plug metal:diameter:4.0/5.0/6.0mm 6.mini plug to mini plug:diameter:diameter:2.2/4.0/5.0/6.0mm 7.mini plug to mini plug metal:diameter:4.0/5.0/6.0mm 8.mini plug to mini plug:diameter:4.0/5.0/6.0mm 9.Toslink adaptor:a) Toslink jack to Toslink jack, b) Toslink jack to mini plug