The closed system oil channel is simple and easy to clean and maintain. Compatible with drop bars of road bike, and C caliper (SHORT PULL) brake levers. The Juin F1-S Hybrid Hydraulic Disc Brake Caliper is a high-performance braking component designed for bicycles. High-stability and non-corrosive mineral oil. June Tech F1 Hybrid Brakes JUIN TECH R1 Hydraulic Road CX Disc Brake Set 160mm W/ Rotor (F+R Tech Brakes Reddit Non-corrosive and high stability mineral oil Mineral oil is used on the F1-S as it’s hydrophobic and does not absorb moisture from the environment. Juin Tech GTF6 eBike Cyclocross Gravel Bicycle Bike 6-Piston Disc Brake Caliper Set, The unique and lightest 6-Piston brake caliper in the world... Hybrid Hydraulic System: This system combines the reliability and power of hydraulic brakes with the simplicity and ease of maintenance of mechanical disc brakes. JUIN designed side-adjustable knob for adjusting the clearance between pistons, more convenient to operate it. This means that there are no wet or dry boiling temperatures to worry about, the boiling point stays constant and never drops, resulting in braking force to be more consistent and linear. Juin Tech R1 Cable Actuated Hydraulic Bicycle Bike JUIN TECH Hybrid dual-piston double-sided action hydraulic disc brake R&D, Manufacturing, Production in Taiwan Forged aluminum caliper+ CNC Precision oil channel manufacturing process The one-piece piston is made of 7 series aluminum with wear-resistant lubricating coating. Shop for Quality Park Heavy-Duty Document Envelopes - Catalog - 10 Width x 15 Length - 32 lb - Gummed - 100 / Box - Cameo and many other discounted office supplies. Free shipping on orders over $45 All-Weather Performance: The hydraulic system in the caliper ensures consistent braking performance in various weather conditions, including wet and muddy environments. The hybrid design allows for precise control and efficient braking in various conditions.