15mm thick - 59.5 center bore for FC3S Mazda RX7 (1985-1992) - 12x1.50 studs and mounting nuts - 5x114.3 PCD - Sold as a pair - Parts Shop MAX precision CNC machined aluminum wheel spacers are lug and hub centric. They are available for a wide variety of cars, so make sure you get the correct size. Features hardened steel studs and lug nuts all with a PCD of 114.3mm. Pair these with our variety of slip on spacers for adjustable width! Now you can have great fitment with several sets of wheels despite differences in offset without buying more than one set of spacers. Do you live in the snow and have a set of snow tires and wheels or sometimes you need extra space for tire cables? When you send the rear of your car sideways into somethig and it just dont look the same on both sides, you can run slightly different widths left and right. Drifters are always coming across new tires they want to try, but each brand has a different side wall profile, or some tires on sale where we cant be too picky about the exact size when it comes to price, however if you have super flush fender flairs or body work, they may rub too much so its really nice to be able to pull out a slip on from the stack and prevent rubbing. Also if you wanted to try stretching you tires a little more you can go down one size and add a slip on spacer maintaining your hella flush look without redoing bodywork & paint. If you are like us you cant resist switching up your style by buying and selling used wheels, and these adjustable spacers will make sure that whatever wheels you come across, you dont have to make any compromise in fitment. There are so many factors in wheel fitment including what chassis parts you have, ride height, alignment, offset, wheel diameter, tire size, brand etc.CAUTION: BOLT-ON WHEEL SPACERS MAY CAUSE INTERFERENCE BETWEEN YOUR STOCK STUDS AND BACK OF THE WHEEL. CHECK FOR CLEARANCE BEFORE DRIVING. YOU MAY NEED TO CUT STUDS DOWN OR ADD SLIP ON SPCRS.