None what so ever

Everything

I had to get a chain quickly and this was the so called best of the bunch at my LBS who recommended it.
In a nutshell this chain lasted all of a 120 miles before it streched to the limit of its use.
Taya missed putting "un" before the "pro"
Absolute crap

Purdy. It's silver, heh heh. Strong, quiet, shifts well.

I dunno of any yet...give it another few months...maybe it'll stretch.

Shifts nicely over my assorted chainrings (Shimano, Truvativ, and Syncros) and across my darned Nashbar cassette. It's nice and quiet. I'd reccomend it as a cheap alternative to anything on the market.

Similar Products Used:

Shimano, SRAM, Sedis, DID Lanner (CRAP!!!!!!)

Strong and hard wearing once fitted.

The packaging says 'No Tools Required' to fit and remove. That's totally wrong because I needed 'Grilla-Grips' to fit the Sigma connector. And I was unable to remove the connector with my bare hands or even tools and had to get the chain off the bike by removing one of the conventional pins with a chain link extractor.

The Sigma connector simply doesn't work easily. I would challenge anyone to fit and remove this chain without tools. Avoid this chain and make your life easier by using a Sachs/SRAM chain instead.

Similar Products Used:

Sachs PC 89, 9 speed.