Copper base metal structure design ensures wear resistance and high temperature resistance. Short running-in period and strong braking force design helps reduce disc wear. High hardness makes it not easy to bend and deform. It is constructed of copper base metal material. Compact and lightweight design makes it easy to store and carry. The bicycle brake pad are suitable for bikes. Item Name: Bike Brake Pad Material: Copper Base Metal Features: Noise Reduction, Anti-deformation, Anti-abrasion Attributes: A (DS-01B), B (DS-01F), C (DS-01D), D (DS-02A), E (DS-02B), F (DS-01E), G (DS-02D), H (DS-02F), I (DS-03F), J (DS-04B), K (DS-05B), L (DS-05C), M (DS-07B), N (DS-07C(With Hole), O (DS-07C), P (DS-08A), Q (DS-08B), R (DS-11A), S (DS-11C), T (DS-11D), U (DS-11E), V (DS-11G), W (DS-11H), X (DS-11K) Size Details: Size: 8.3cm x 12.5cm x 1cm/3.27" x 4.93" x 0.39" (Approx.) Diameter: 2.4cm-3.25cm/0.94"-1.28" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Pair of Bike Brake Pad