Original Brompton bar is 510mm long, H&H is 40mm longe at 550mm.Standard 130mmgrips compatible.
Original Brompton bar is 120mm high, while H&H is 95mm.S typeBroompton can mod into this mid rise M bar (large ezwheels or with rack will help the clearance off ground after fold).
For ergonomics purpose, the angle backward is 2° more than stock Brompton bar.