1 Set (10 pcs) CNC Street Fighter Aluminum Motorcycle Windshield Windscreen Bolt Screw Kit Silver Fit For Honda CBR 600 F2 F3 F4 F4i 1991-2007 Bolt color:silver Bolt heads are cold formed and the shanks threads are rolled 60% lighter than steel and 40% lighter than Titanium we ship by USPS first class international(about 2-5 working days delivery). Tensile strength is 0-560Mpa; which is stronger than mild steel