Envy Union Bars 650mm are aluminum bars. Aluminum bars require an oversized clamp but do not work with HIC compression. Union Bars work with ICS and IHC compression but make sure your bars don't have a pre-installed star nut if you want to use them with IHC compression. Aluminum bars have a much thicker outer diameter than steel bars to get strength close to a steel bar but are significantly lighter than steel bars.

Specifications:

• Made from heat-treated 7 series aluminum for extreme light weight and strength
• available in an oversized outer diameter (with slit)
• compatible with ICS or IHC compression
• 3 degrees backsweep
• 1.65 lbs
• Available dimensions: 23.60W X 25.60H
• Bars are oversized on the outside and standard on the inside