Original Randy Smith designAllow 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-endInclude aluminum disc spacer (second spacer for dual disc available), socket head screws, axle spacer and 3/4'' axleSpacer and axle are cadmium-plated disc spacer is chrome-platedMade in the U.S.A.