The Shimano Ultegra 6600 BR-6600 FRONT & REAR SET Brake Calipers are high-quality 9-speed brake calipers designed for road bikes. Made of durable aluminum and featuring a sleek silver color, these calipers are lightweight at 300-399 grams each. Compatible with Shimano brand components, this set includes both front and rear calipers, perfect for cyclists looking to upgrade their braking system with reliable and efficient rim brakes. Made in Japan, these Ultegra 6600 brake calipers are a top choice for serious cyclists seeking performance and durability.