3 TIMES life than normal semi-metal disc brake pads thanks to the improved formula.Revolutionary pads 33% weight of normal, about 11.0g per pair, please note the weight varies by models.Red Copper Mixed in Action Braking brake pad to help Heat Dissipation and Quiet.Maximum Feather Weight and Heat Dissipation.All Weather Conditions, Excellent Braking Power.To Replace of SHIMANO K04Ti, K04S, K03Ti, K03S, L04C, L03A PadsFit: BR-M9100, BR-M9110, BR-M8110, BR-R9170-F, BR-R9170-R, BR-R8070-F, BR-R8070-R, BR-R7070-F, BR-R7070- R, BR-4770-F, BR-4770-R, BR-RS805-F, BR-RS805-R, BR-RS505-F, BR-RS505-R, BR-RS405-F, BR-RS405-R, BR-RS305-F, BR-RS305-R, BR-U5000-F, BR-U5000-R, BR-RX810-F, BR-RX810-R, BR-RX400-F, BR-RX400-RColour: silverMaterial: resinPackage Contents:20 pair x Bicycle Disc Brake PadsOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.