1、Heat Dissipation: The integration of double row hollow heat sinks and brake pads quickly conducts the brakes, generates high heat and cools, avoiding failures caused by high temperature oil pressure lock and long term brakes. 2、Polygonal Airflow Dics: Floating dics adopts polygonal airflow design, which has good heat dissipation performance and the large hole spacing is not easy to accumulate sand and dust. 3、Aluminum Alloy Material: Made of aluminum alloy material, compact, lightweight, sturdy and durable, used in the braking system of ordinary bicycles, mountain bicycles and road bicycles. 4、Frosted Brake Lever: The frosted surface of the brake lever has concave holes to increase friction and reject hand slippage caused by hand sweat. Features are sensitive and strong braking, good stability, good hand feeling. 5、Product Size: Brake lever length is 83mm/3.3in, suitable for 22.2mm/0.9in handlebars. Conversion seat brake size is A pillar 74mm/2.9in, B pillar 51mm/2.0in, conversion seat printing is F180mm/R160mm. Disc diameter is 160mm/6.3in. BCD 44mm/0.16in (hole to hole). Item Type: Bicycle Disc Brake Kit Material: Aluminum Alloy Weight: Approx. 529g/18.7oz Rear Disc Brake Cable Length: Approx.1.5m/4.9ft Brake Lever Length: Approx. 83mm/3.3in, Suitable for 22.2mm/0.9in Handlebars Conversion Seat Brake Size: Approx. A Pillar 74mm/2.9in, B Pillar 51mm/2.0in Conversion Seat Printing: F180mm/R160mm (F stands for the front, R stands for the back, 160 and 140 refer to the disc diameter (mm)) Disc Diameter: Approx.160mm/6.3in BCD: Approx. 44mm/0.16in (Hole to Hole) 1 x Dics 1 x Rear Brake 8 x Screw 1 x Conversion Seat Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store