Features1Made of heavy duty aluminium alloy, ensure for a long time use. 2Applicable 24*1 3/8, 26*1 3/8, 27*1 3/8 of bike rims. 3Light weight and durable for variable braking power. 4The brake pads are made of hard-wearing rubber which can decrease noise and providing good braking power in wet and dry conditions. 5Usable replacement suitable for most of road brake bikes.SpecificationMade of heavy duty aluminium alloy, ensure for a long time use.Suitable replacement for most of road brake bikes. Features:Made of heavy duty aluminium alloy, ensure for a long time use.Applicable 24*1 3/8, 26*1 3/8, 27*1 3/8 of bike rims.Light weight and durable for variable braking power.The brake pads are made of hard-wearing rubberwhich can decrease noise and providinggood braking power in wet and dry conditions.Usable replacementsuitable for most of road brake bikes. Specifications:Material: Aluminum Alloy + Rubber Color: Black Front / Black Rear / Sliver Front/ Sliver Rear(Optional)Screw Arbor Length: 50mm / 1.9in(Front), 35mm / 1.3in(Rear)Center distance: 61-79mm / 2.4-3.1inWeight: 175g / 6.1oz(Front), 170g / 5.9oz(Rear)Package List:1 * Brake CaliperPackage List1 * Brake Caliper