Wolf Tooth Headset Spacer Knock Block - 10mm, Blue Nuts & Washers - 10 degree flare and

- 10 degree flare and a wide flat top for comfort and control

161246-Q0-L

- Includes: flip/flop front or rear lever

- Replacement parts for Formula master cylinders

155155-Q0-L

Wolf Tooth Headset Spacer Knock Block - 10mm, Blue Nuts & Washers - 10 degree flare andWolf Tooth Headset Spacers for Trek Knock Block are machined in the USA out of aircraft grade aluminum. Compatible with Trek Knock Block system These spacers have unique raised features that key to Knock Block compatible stems (made by Bontrager) 1 1 8" top (straight 1 1 8" or 1 1 8" to 1 1 2" taper) steerer tubes only Product Specifics Color: Blue Material: Aluminum keyword search: Trek Knock Block Thickness: 10 S. H. I. S. Stem Clamp Diameter: 28. 6