• The synchronous wheels in this link are made of aluminum alloy with zinc-plated iron rims.
• Synchronous wheel bore tolerance of positive 0.01 ~ positive 0.02, the bore is divided into through holes and keyway holes.
• Synchronous wheel fender size due to different batches, there may be 2-3mm difference, for the installation of equipment with sufficient space does not affect the use of specific in kind shall prevail. For the requirements of the outer diameter of the edge of the customer, be sure to contact customer service to confirm the size before ordering.
• Each synchronous wheel default has 2 fixed screw holes, screws and wrenches matching gift.

• According to your choose. 

• We accept Paypal only, It is fast, Easy and Safe.
• Payment must be completed within 7 days.
• PLEASE NOTE: S&H DOES NOT INCLUDE DUTIES, LOCATL TAXES OR ANY OTHER IMPORTATION FEES.
• Please list your special requests (color, packages, etc.) in the PAYPAL NOTES SECTION when you make payment.

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 Shipping 

• We Ship to Worldwide.
• Orders processed within 24-48 hours of payment verification. it will take 15-25 days for delivery. but Customs will random inspection some parcel, so that's why some parcel need more than four weeks to arrive. Shipping time is only estimated and not guaranteed.
• We only ship to confirmed PAYPAL addresses. Your PAYPAL address MUST MATCH your Shipping address.
• Package to USA will Shipping by E-Package with Tracking Number (7-15 Days to Delivered). To other Countries will shipping by Post Air Mail without tracking number (ONLY when the order is over 20USD will supply Tracking Number Shipping Way!) (15-35 Days to Delivered)
• Items are shipped via China Post Air Mail.

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 Guarantee 

• Good quality. Buy with confidence!
• If you are not satisfied when you receive your item, please return it within 7 days for a replacement or money back. Please contact me before you return it.
• Not accept returning of electronic components.
• Full refund after we receive our original item, Note: Return shipping is to be paid by the Buyer.
• We maintain high standards of excellence and strive for customer satisfaction! Feedback is very important to us. We request that you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns.