1. How to install, is it difficult?
- Dear customer, it's so easy to install without instruction.
2. How to return if I am not very satisfied when received the item?
- Dear customer, if you need to return, please send an eBay message to us within 30 days. The item must keep intact. Please send the item back to us according the address which we offered to you. The refund would be not including shipping cost if it is buyer's fault and buyer have to bear the shipping cost for returning. Buyer could ask for full refund or change products for free if it is seller's fault.