Acros Blocklock Semi-integrated headset (zs) Lower part for frames with ID of 66mm head tube

Acros part code: 51.02.620S-120 / 51.02.625S-120

This is a replacement Acros ZS66 Blocklock lower cup and bearing assembly (Does not include blocklock crown race)

For use with 1 1/2'' tapered forks

Part supplied as pictured