Genuine Profile Design Aero Handlebar Adjustment Kit Lift the aero handlebar closer to your reach and away from the base bar or handlebar with the simple addition of this kit. Can be used with all Profile Design aero handlebars. The adjustment range is 5 mm, 10 mm or max. 15mm per kit The kit includes 2 x 10mm risers, 2 x 5mm risers and a screw mounting kit.