RENTHAL RENTHAL FATBAR 839 BK 839-01-BK7010 T6 aluminum alloy, braceless design to reduce weight while maintaining an extremely high strength, The braceless design allows for a comfortable level of flexibility, 1 1 8" clamping area reduces slippage, Laser etched positioning grid; knurled clutch side bar end prevents grip slippage, Shot peened, anodized finish resists corrosion, Includes an updated injection molded foam bar pad for better protection and greater durability, Requires 1 1 8"