Official Redcat Racing Electric Start Back Plate for Vertex/Infinity 16 SH 18 21 This Official Redcat Racing electric start back plate setup is specifically designed to fit the following Redcat Racing vehicles:Aftershock 21, Aftershock 3.0, Aftershock 3.5Backdraft 3.5Caldera 3.0Earthquake 3.0, Earthquake 3.5Landslide 21Lightning STRSandstorm 21ShockwaveTornado BB, Todnado S30Volcano MX, Volcano S30, Volcano SV, Volcano T2Vortex SSThis product is also guaranteed to fit any of the following Nitro engines, regardless of the brand of vehicle they're attached to:Vertex .16, Vertex .18Sh .18, Sh .21Infinity .18The case itself is right around 1" in width, height and depth and sports a hex size:12mm one way bearing. Item SpecificsCompatible Vehicle TypeCars, Trucks & MotorcyclesCompatible Fuel TypeNitro & Glow FuelCompatible BrandFor Redcat RacingTypeElectric Start Back PlateModelElectric Start Back PlateCompatible Scale1:8 POLICIES By purchasing this item, buyer is confirming they have read and agreed to all of the following policies: Payments: Payments must be made immediately on Buy It Now listings, and as soon as possible for products. Neutroniks reserves the right to cancel any listing which is not made within a reasonable time. The time is dependant on quantity of item in stock and market desirability/demand. Purchasing: Most purchases are performed through PayPal. Alternative payment methods may be available, depending on the buyer's location, the category the item is listed in, etc. Send us a message if you have any questions or would like to recommend an alternate method of payment. All payments are subject to eCRATER's Accepted Payments Policy. Shipping: Most orders are shipped same day or next business day and may or may not include tracking. If you're buying an item at a great price, there's a good chance it does not include tracking. Some orders may take 2-6 business days to ship due to item location or other variables. In these cases, we will include a lead time within the listing. If no lead time is mentioned, you can assume the item will ship sooner than later. Returns, Exchanges and Refunds: Neutroniks will exchange a damaged or defective part within 14 days of customer's receipt. Only one exchange will be made. If the customer decides to return a defective/damaged item rather than exchange, they agree to pay a 20% restocking fee and to pay the cost of return shipping. Returns are not provided on non-defective parts.