Profile Design DRV/A Road Drop Handlebar - 42cm 120mm Drop 136mm Reach 31.8mm Black. The DRiVe metric by Profile Design pinpoints the precise position in the drops where riders instinctively place their hands. The metric is incorporated into the DRV/A handlebars designed around a cyclist's most powerful hand positions. The tops and hoods complement the powerhouse DRiVe position and the Reach and DRiVe are progressively sized as the bar increases in width. This progressive sizing ensures the most powerful positions remain right where they are needed.