Picked up a couple of chains from the forum a while ago and got tucked away in a drawer thinking that they were 8 speed. On closer inspection turns out that they're 5-7 speed with the inner links on the outside profiled and flat on the top on the inside.. so definitely directional. The Sedis Sport is a very good chain and was used by many of the pro teams for it's reliability but I'm liking the bright finish of the Regina chain..,
Nice but I much prefer the rarer Everest de Oreo chains that the top TT guys used in the 70’s these were also 5-7speed I believe but slotted & goldish links