Profile Spline-Drive Spider-4-Arm-19mm Color:Red One spring design

One spring design

and they have since gone on to change the standards that all forks are judged by

SIZE: 1" or 1 1/8"

Length: 135mm (mid)

Profile Spline-Drive Spider-4-Arm-19mm Color:Red One spring designSPECS: MATERIAL: CNC machined in the U. S. A. from 6061 aluminum. USE: Works with most 3 pc chromoly cranks and 48 splined 19mm 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 19mm spindles and do not require a gear bolt to attach to crank arm. Weight: 2. 55oz 74g