Astra Depot 4x Black Billet Car Pickup Truck Manual Door Crank Handle Window Winders Set 10mm round square with 16 splines Update your car with this elegant designed handles The aluminum window winders are supplied with three adapters to suit many applications Comes With Mounting Hardware Easy installation. Minor Modification May Required for Some Models Universal fit most vehicles with door handle axis size: 10mm round or 10mm square or 10mm round with 16 splines.