Profile Spline-Drive Spider-4-Arm-22mm Color:Black CRANK REQUIREMENT: Any crank with

CRANK REQUIREMENT: Any crank with 4-Bolt spider or that can be adapted with a 4-bolt spider

Extremely lightweight 700 series aluminum with an oval inner wall for added strength

SPECIAL FEATURE: Threaded chain ring bolt holes saves weight and makes for better alignment

The Onyx Thru-Bolt is the perfect addition to your custom wheelset

Profile Spline-Drive Spider-4-Arm-22mm Color:Black CRANK REQUIREMENT: Any crank withSPECS: MATERIAL: CNC machined in the U. S. A. from 6061 aluminum. USE: Works with most 3 pc chromoly cranks and 48 splined 22mm spindles (made with offset for outboard bottom bracket Profile). Allows you to use 4 Bolt chainrings. SIZE: 104mm bolt pattern for 4 bolt chainrings. NOTE: Spline Drive Spiders slide directly onto 48 splined 22mm spindles and do not require a gear bolt to attach to crank arm. Weight: 2. 55oz 74g