Dimensions and fit Each brake pad measures 11 cm x 3 cm with a thickness of 1.2 cm (4.33 in x 1.18 in; 0.47 in). Designed to fit most indoor cycling bikes. Easy installation Easy to install, allowing you to quickly or upgrade your existing brake system without hassle. Function and performance Provides consistent friction and resistance for reliable indoor cycling bike performance during workouts. Material Material is not specified by the product description. Compatibility and use scenarios For most indoor cycling bikes, these brake pads are a practical replacement option to maintain braking performance. Use scenario 1: worn pads on a home indoor cycling bike to restore smooth and predictable braking during regular workouts. Use scenario 2: Upgrade a gym or spin bike's brakes to improve friction consistency for interval training or simulated hill climbs. Use scenario 3: Keep a spare brake pad on hand in a studio or home gym to minimize downtime when a pad wears out.