BRAND NEW-NEVER USED OR REMOVED FROM THE PACKAGE. THIS IS A 33 TOOTH LIGHTWEIGHT SPUR GEAR WITH SET SCREW INCLUDED FOR 3/32 AXLES USED FOR SIDEWINDER MOTOR CONFIGURATIONS AND HELD ONTO THE AXLE WITH A .095MM SET SCREW (USE SLOT-IT SIPA22 OR SIPA23 HEXAGONAL SCREWDRIVER TO TIGHTEN OR LOOSEN). IT IS MADE FROM ERGAL ANODIZED METAL. THE GEAR IS 18MM SO IT IS MEANT TO BE USED IN SLOT-IT OR PRO SLOT SLOT CAR MANUFACTURERS CARS THAT ARE SIDEWINDERS. IT WILL NOT FIT FLY,SCALEXTRIC,NINCO, MRRC,CARRERA CARS AS THEY USE THE 19MM SPUR GEAR. 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 ALUMINUM SET SCREW WHEELS. YOU MAY STILL USE THE STOCK WHEELS THAT CAME WITH THE ORIGINAL CAR BY REAMING THEM OUT WITH A 3/32 DRILL BIT AND THEN GLUING THE WHEELS TO THE AXLE WITH SUPER GLUE. 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 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, DISCOVER, AMEX ......................                                        MULTI ITEM SHIPPING DISCOUNT OF .00 PER EACH ADDITIONAL ITEM OF SIMILAR SIZE SHIPPED IN THE US.