Wolf Tooth Headset Spacer Knock Block - 10mm, Orange 27.5" (650b) Suspension Forks Compatible only with FD-4700 and

Compatible only with FD-4700 and FD-RX400 front derailleurs

UPC: 17563

Includes 2 (AAA) batteries

CK6321 350507-08

Required hardware and lock rings are not included

Wolf Tooth Headset Spacer Knock Block - 10mm, Orange 27.5" (650b) Suspension Forks Compatible only with FD-4700 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: Orange Material: Aluminum keyword search: Trek Knock Block Thickness: 10 S. H. I. S. Stem Clamp Diameter: 28.