J-bend extensions in 7003 alloy, Parabolica Uno is perfect for long distance races. 
Suitable for 31.7mm diameter bars and new version suitable for 35.0mm diameter. 
Mechanical and electronic bar-end shifters (internal only) compatible.
Additional Info:

Handlebar Shape: J-bend extensions
Material: Alloy 6061
Diameter: 31,7mm, 35,0mm
Extensions length: max 300mm
Armrest: full adjustable with pads included
Armrest stack height: 10, 15, 30mm (included in 31.7mm version only)
Finish: black matt anodized
Info: Approved UCI (3:1 rule) 
Weight: 350g