BRAND NEW-NEVER USED OR REMOVED FROM THE PACKAGE. THIS IS 2 -MAGNESIUM WHEELS WITH SET SCREWS TO BE USED WITH SLOT-ITS 3/32 AXLES. THE WHEELS ARE 17.3X8mm AND ARE INTENDED FOR USE ON FLY, SCALEXTRIC, NINCO SLOT IT. IF YOU ARE REPLACING THE STANDARD PLASTIC GEAR IN MOST MANUFACTURERS CARS THE STOCK AXLES ARE METRIC IN SIZE (SLIGHTLY LARGER DIAMETER) ALONG WITH THE BEARINGS, AND STOCK PLASTIC WHEELS. IT IS BEST TO REPLACE THE BEARINGS AND AXLE WITH SLOT-IT'S 3/32 AXLE, BEARINGS AND THE MAGNESIUM SET SCREW WHEELS. THE WHEELS COME IN A SILVER FINISH. OFTEN THE STOCK WHEELS AND GEARS HAVE EXCESSIVE PLAY AND CANNOT HANDLE HEAVY STOP AND GO USAGE. SLOT-IT PARTS ARE HEAVY DUTY AND WERE DEVELOPED FOR HIGH PERFORMANCE AND ENDURANCE USAGE AS WELL AS GIVING A SMOOTH AND PRECISE DRIVE TRAIN. THE PARTS ARE OF THE HIGHEST QUALITY AND BEAUTIFULLY FINISHED. ALL PARTS SHIPPED IN THE UNITED STATES ARE INSURED YOU ONLY PAY SHIPPING FOR THE 1ST PART PURCHASED AND ALL OTHER PARTS HAVE FREE SHIPPING AND YOU CAN EVEN MIX OR MATCH PARTS LIKE TIRES, WHEELS, GEARS AND MORE ................ WILL SHIP WORLDWIDE- WITH A MULTI ITEM SHIPPING DISCOUNT. FREE SHIPPING FOR PARTS WHEN THEY SHIP WITH A LARGER ITEM SUCH AS A CAR OR SET.  WE ACCEPT PAYPAL, VISA, MASTERCARD, MDISCOVER, AMEX ......................                                                        MULTI ITEM SHIPPING DISCOUNT OF .00 PER EACH ADDITIONAL ITEM OF SIMILAR SIZE SHIPPED IN THE US.