aluminium alloy Bike brake piston:manufactured with aluminium alloy material, and enough to use. ​,Bike Seal Kit Piston Bike brakes kit:share with your friends and family as they are practical bike brake kit,Brake Kit Metal piston hydraulic brake caliper:the strip groove design reduces the heat transfer area and increases the airflow shuttle. conducive to heat dissipation.​,Metal Brake Metal brake:they are convenient and easy ti install and carry with you,Bike Brakes Kit Bicyclea repair kit:tested, smooth degree of durability, brake force, sealing, they are practical brake piston tools, keep your brakes safer,Metal Brake Size 2.19x2.19cm Color Black Style Modern Material aluminium alloy Brand Name HANABASS Item Weight 9.07 g Part Number 21QZGKCKK1608RPWM Manufacturer HANABASS Package Weight 0.04 Pounds Suggested Users unisex-adult Item Dimensions LxWxH 0.86 x 0.86 x 0.35 inches Item Package Dimensions L x W x H 1.97 x 1.97 x 0.79 inches