Package contents 8 pairs of bicycle disc brake pads, 8 pins, and 8 shrapnel. This quantity covers typical replacement needs. Product size and fit Brake pad dimensions: about 33x30x4 mm (1.3x1.18x0.16 in). Please confirm the size before to ensure proper fit. Provides braking performance in various weather conditions, including rain, snow, and mud. Performance and durability materials: brake pads are made from resin semimetal and carbon steel. Pins and shrapnel are iron, offering reliability, strength, and durability. Designed to resist breakage and deformation, promoting long service life. Delivers strong, stable braking performance across a range of riding conditions. Installation and maintenance Easy to install with clear replacement steps: Remove the old brake pads from the bicycle. Install the brake pads. Adjust the brake clearance and test braking performance. Ride normally after installation is complete. Use scenarios Daily urban commuting in wet weather (rainy days, spray from roads). Mountain biking or offroad riding where mud and debris are common. Spare parts kit for routine maintenance or inventory to minimize downtime.