These bars are manufactured from 1" OD x 0.120” wall seamless 4130 chromoly tubing. They will work with throttle cables and TBW bikes (throttle by wire, electronic throttle). O/S (oversize bars) are 1-1/8" in the center and 1" on the ends for factory harley hand controls. All bends are created with internal mandrels on a CNC bender to reduce flat spots in the bends and all welded joints are precision mitered and TIG welded. They have CNC-machined slots for internal cable routing and offer internal tube tapering on right bar to accept TBW module. Available in 3 heights, low mid, high, and 2 finishes, chrome or black electro plated.