HAN-S14: This part will improve performance for road cyclists, by allowing a bigger rear cassette installation. Bolt included.
Works with any 1-11 or 1-10 Drivetrain (42T max cassette, with a single chain ring crankset)
Crank should be with a single chain ring or a double chain ring where the difference between the plates sizes is 14T max (with an exception: works with a compact Shimano crank of 34-50T plates, 2-10 cassette 11-36)
In a double chain ring crankset there is a limitation of 40T rear cassette with Shimano and Sram, and 36T with Campagnolo.
HAN-S10: This part is used on Shimano Shadow rear derailleurs starting 2013. Bolt included.
Will fit a cassette size of 40T or bigger
Improves shifting performance on 1-10 systems
Increases chain wrap, eliminates the need to drastically thread in the b-tension screw
Replaces the Direct Mount link on 2013 or later Shimano 10-speed Shadow+ rear derailleurs to reduce premature shifting degradation