Designed and manufactured by Mark van der Kwaak (DBBP) from the Netherlands after the famous Flanders accessory risers of the 40˚s and 50’s. All parts are cast in bronze and the handlebar clamps are sandwiched between Delrin rings to absorb vibration and still firmly hold the handlebars. This way you can combine the risers with very high and/or wide handlebars without problem.