All of this in an incredibly thin 40mm, 146g package, that works with any drop bar levers on the market. For tandem bikes, we recommend the Spyre caliper paired with our 2.3 mm thick rotors.This will give optimum stopping performance for you and your partner. SPECIFICATIONS - Dual sided actuation - Works with ALL cable actuated road levers. Compressionless (linear strand) housing is highly recommended - Comes with TRP ultra-grippy semi-metallic pads - Calipers are compatible with Shimano M525/M515 pads - Easy adjustment and set up - Compound works well in dry conditions but may wear quickly in wet/muddy conditions. This item is in the category "Sporting Goods\Cycling\Bike Components & Parts\Brakes". The seller is "danray168" and is located in this country: TW. This item can be shipped worldwide.