Aero! Sculls New in 2009 and redesigned in 2010 with an adjustable handle that requires no tools for oar length adjustment. The the Original (Aero-0) will be soon joined by the High Aspect Ratio, hydrodynamic blade (Aero-H). Other changes include a innovative handle attachment. With a hex shaft profile end and a knurled adjustment ring allows easy adjustment with no chance of slipping. Aero-O Aero-H Handle Attachment Details: No Tools Required for Adjustment: Durham Boat Company, Inc. Dreher sculls | sweeps seats I foot stretchers riggers | fins | rudders Indoor rowing tanks Rowing shells for all levels Contact Information: Durham Boat Company, Inc. [email protected] (email)