Original Randy Smith design Allow the use of narrow glide 19" or 21" wheel (found on FX, FXR, FXD and XL models) to be installed in a 41 mm Wide Glide front-end Include aluminum disc spacer (second spacer for dual disc available), socket head screws, axle spacer and 3/4" axle Spacer and axle are cadmium-plated; disc spacer is chrome-plated Made in the U.S.A.. NARROW GLIDE CONV. KIT