Profile Spline-Drive Spider-4-Arm-19mm location-68019093667-out-of-stock 1 1/2" - 1 1/8"

1 1/2" - 1 1/8" Upper with 1 1/2 Lower

silent engagement and is nearly frictionless

5" feature lightweight 11 butted tubing made from 4130 chromoly and heat-treated for superior strength

slip-resistant

Profile Spline-Drive Spider-4-Arm-19mm location-68019093667-out-of-stock 1 1/2" - 1 1/8"SPECS: 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