Payment Policy                                 We only accept payments via PayPal.  All payments must be prepaid, Description:   : 1pc 2 Blades Nylon Paddle Boat Propeller High Strength 3mm / 4mm Rc Boat Shaft #1412 Quantity : 1pc 100% Brand New Material:PC Resin Aperture:Φ3mm(for 3mm boat shaft) Aperture:Φ4mm(for 4mm boat shaft) Diameter:D30/32/34/36/38/40mm  diameter:  30mm    H14mm    d7mm     shaft aperture : 3 mm   diameter ：32mm     H15mm    d7mm      shaft aperture : 3 mm    diameter ：34mm     H15.5mm   d7.9mm      shaft aperture : 4 mm    diameter ：36mm     H16.5mm    d7.9mm      shaft aperture : 4 mm   diameter ：38mm     H17mm     d7.9mm     shaft aperture : 4 mm   diameter ：40mm     H17.5mm    d7.9mm      shaft aperture : 4 mm   refund If there is any problem when you receive your parcel, please contact us without hesitate in 3 days. If you are not 100% satisfied with your purchase, simply return the unworn item within 30 days of the item ship date and we will gladly exchange, replace， or refund it inclusive of delivery charges. (All refund should be sent back by our paypal account) Shipping Time & Method:    United States : item transport to the U.S.We use accelerate transportation express.usually 7 to 15 working days.Remote areas will delay the transportation time 20 Working days.Each item have tracking number. worldwide : Item will be shipped within 3 days after payment is cleared.Goods will be sent via airmail . Delivery takes about 25-30 business day (without holiday). All products have been checked and packaged in good condition before dispatch.                                                                                         Tracking number : Your purchase amount more than $18,Then you will get a free items tracking number.( If you shopping amount not reached $18. You can also buy tracking number ,Cost $3 ) Address : Please make sure your address in Ebay is matched with your shipping address before pay. If you would like to change the address, please contact us IMMEDIATELY after your payment.  About Us   Your satisfaction is our first priority. Defective product will be offered exchange or refund. 100% Money back Guarantee. We appreciate your positive feedback. Our system will leave feedback automatically after you pay it. Please leave us positive feedback upon satisfaction of the item. Please email us before leaving negative and neutral feedback. We will try our best to solve the issue.  We will be glad to answer any question you may have, please feel free to contact us at: we do try respond as quickly as possible. Due to time zone difference, please allow 12~24 hours to get your mail replied.