Pro Taper SE Handlebars: High-strength 2014-T6 aerospace aluminum alloy rated at 70,000 PSI ultimate strength. Laser etched bar trimming marks if you need to make them narrower. Laser etched positioning guides and logos. Knurled on the left end. Shot peened finish to increase fatigue life. 5mm wall thickness for maximum strength. Stainless hardware. Cold-forged crossbar.