KMC Z8.1 Chain - 6 7 8-Speed Gray/Gray Bulk 500 Foot Roll 62mm Lumen output at high steady:

Lumen output at high steady: 650 and 50

Hollow taper CrMo steel axles

Chain management keeps the drivetrain quiet and secure

Nipples sold separately Spoke Profile Double Butted Color Black Thread Diameter 2 Length 302 Spoke Interface J-Bend Defined Color Black

KMC Z8.1 Chain - 6 7 8-Speed Gray/Gray Bulk 500 Foot Roll 62mm Lumen output at high steady:The Z8. 1 chain features Z shaped bridges and inner plate chamfering for improved shifting. The Z8. 1 is compatible with 6 and 7 speed drivetrains as well as IG 8 speed systems. Z shaped bridges and inner plate chamfering for improved shifting Compatible with 6 and 7 speed drivetrains. Also compatible with IG 8 speed systems 1 2" x 3 32" link size Drivetrain Speeds 8 Color Gray Half Link Chain No Defined Color Gray