ProTaper 8805D-BLK Evo Black Handlebar (Carmichael Black 8805D-BLK) Made from 4mm, proprietary, 7000 series aluminum alloy for superior tensile and yield strength Best balance between fatigue life, impact strength and impact absorbing flex High tech, stress relieved, shot peen and anodized finish for unmatched durability Independent lab tests show that the EVO handlebars outlast every other handlebar on the market in fatigue life Epoxy inner coating resists corrosion