BVANQ Lenses Replacement Brown Polarized for Oakley Crankshaft (OO9239) Sunglasses It offers 100% UV protection & 100% polarized, easy to install Only fits with the original Oakley Crankshaft frame extremely seamless Reduces glare and enhances contrast perfectly Optional mirror coatings optimize usable light for specific enviroment and activities These customized polarized lenses are precision cut, affordable