absoluteBLACK S3 - E-E2 Type Oval Chain Guide - 26-34T - Black YGroup_7033398132781 I tighten the set screw

I tighten the set screw to the point where it stops itself

They will sit below the knee

Low profile front and rear axle

This can be called either Press Fit 30 (PF30) or Specialized OSBB

absoluteBLACK S3 - E-E2 Type Oval Chain Guide - 26-34T - Black YGroup_7033398132781 I tighten the set screwThe Absoluteblack Oval Guide chain guide is here. This is the only chain guide on the market that is designed specifically for Oval chainrings, keeping your chain secure at every single crank position. The Oval Guide accommodates chainlines from 48 53mm, making it compatible with every single bike setup. Featuring all titanium hardware it weighs virtually nothing at just 17g Specs: Size (Mass + 1g): 17g including all titanium hardware Fits to: SRAM S3