4 pairs of bicycle semi-metal brake pads for sram DB1, DB3, DB5 road Caution: The parcel will be sent directly from China, not from USA. However the real average delivery time is about 2 weeks to 3 weeks. Sometimes it may be even less than 2 week, if you are is in New York or big cities. I will try my best send the parcel as soon as i receive your orders. So if you will not receive your parcel in 21 days after shipment, please contact with me as soon as you can. Thanks for your understanding in advance. I have almost all models of good-quality disc brake pads for bicycles. If you are interest, please visit my store on the Amazon. This is the link. https://www.amazon.com/KINGSTOP-JIM/b/ref=w_bl_hsx_s_sp_web_15759230011?ie=UTF8&node=15759230011&field-lbr_brands_browse-bin=KINGSTOP+JIM Contribute to the low amount of metal in the friction material, the brake pads will do very low harm to the brake rotors. If you could buy more items one time or you are my frequent customer, i will send you some gifts for you.