Metal-free ceramic technology, more stable friction coefficient Low disc wear and comfortable braking feel, stable, durable and excellent power modulation. Replacement brake pads provide smooth, predictable and progressive stopping power. Waterproof and heat resistant, it can be used in bad weather and various road conditions. Compatible with Avid Mechanical BB5 other models，Please refer to the picture size to buy. Quantity 2 pairs Colour blue Material Ceramic Type Bike brake pads Brand Unbranded/Generic MPN W2D94927209631 EAN 4894927209631 .