The Shimano sprocket lockring for Dura-Ace Track HB-7710-R and HB-7600-R is a lockring that fixes the sprocket to the Track rear hub. The lockring is made of steel and has a 1.29 x 24 tpi thread. It is also compatible with HB-7600-A-R.
The Shimano sprocket lockring for Dura-Ace Track HB-7710-R and HB-7600-R is a lockring that fixes the sprocket to the Track rear hub. The lockring is made of steel and has a 1.29 x 24 tpi thread. It is also compatible with HB-7600-A-R.