Universal Bike / Cycle Alloy Side Pull Calliper Brake (FRONT OR REAR) Fully Adjustable + Extra Secure Threaded Brake Blocks! FREE VALVE CAP UPGRADE WORTH $4.99! Universal Side Pull Brake - For mountain bikes, childrens bikes, road bikes etc. Brake Blocks Included - Secure & flush fit up to your rim giving maximum braking performance Silver Alloy Arms - Light weight yet durable for variable braking power. Fully Adjustable - Set up your brake style exactly how you want it SKYSCAPE CAPS WORTH $4.99 - INCLUDED FREE! (Schrader or Presta. See Product Description)