These 6061-T6 Aircraft Aluminum Alloy wheel spacers are designed for vehicles with a 6x139.7 PCD/Lug Pattern. They have a thickness of 1 inch and come in a set of 4pcs with 24pcs of studs/nuts included. The wheel spacers are hub centric and feature a wheel spacer making process that includes forging and hard anodizing. With a 10-year manufacturer warranty, these spacers are suitable for front, rear, left, and right placement on the vehicle and are compatible with M12x1.5 studs/lug nuts.