The Shimano CN-7801 chain has been a staple for all Shimano 10 speed drivetrains since its release. Durable, quiet and nimble are a few of the highlights of this product. Although it doesn't offer a quick link, it is a snap to install and should give you many miles of trouble free service. It's no wonder we sell thousands of these chains every year.
Works great on virtually any 10 speed drivetrain from any manufacturer, including 10 speed mountain drivetrains. HG chainpin is a snap to install. Once in a while Shimano comes up with a product that is a no-brainer and this is a good example of one. Buy it, install it, forget about it until it needs replacement, repeat.
This is an awesome chain. not as light as the latest from campy, sram, and shimano itself, but reliable and durable. i even use these on my campy and sram 10-speed setups. if you keep them cleaned and lubed constantly, youre gonna get many miles of use off of these babies. i usually replace mine after 3000 miles (maybe 3500 if necessary) according to my park cc-2 chain checker. the most i can get from a campy record or sram red chain is about 2500. i just hope shimano doesnt discontinue these for the sake of 7900.