Product Specifications: This kit includes two 160mm bicycle brake discs and 12 matching screws, suitable for most bikes with a 6-hole standard. Premium Material: The bicycle brake discs are made of SUS410 stainless steel, offering excellent corrosion resistance, high hardness, and wear resistance, allowing them to withstand greater friction during braking. This extends the life of the brake discs and ensures they maintain their shape and function even under high temperatures and heavy loads, preventing deformation or excessive wear. Design: The disc brakes feature a hollow design for excellent heat dissipation. It effectively dissipates heat generated during cycling, ensuring the bike's braking system functions properly during long rides and continuous use. Easy Installation: The bicycle brake discs have six equally spaced holes and matching screws, requiring only a screwdriver for installation. This 6-hole version can be easily installed on calipers and forks without drilling or welding. Wide Compatibility: This product is compatible with a wide range of bicycle types, including road bikes, mountain bikes, BMX bikes, and mountain bikes. The 160mm diameter and optimized hollow design ensure efficient heat dissipation and stable braking performance in various weather conditions.