This is professional bike brake bleed kit, compatible with most Brake Systems In the Market. Varies adapters apply for Shimano Sram Avid Magura Tektro Hayes Zoom Echo Giant Hs33 Nutt Hope Bengal Formula Fromax and so on. Compatible with Both Mineral and DOT Fluid, but same one injector do not exchange from DOT and Minerial Oil. Transfer design: through the transfer between the connector, to achieve the conversion between mountain bikes and road bikes Professional Bleed Block, Close caliper and adaptor, have english detail user guider, so easy to operate it. Both of two kits have the same function,the Upgraded kit inculde full copper adapters and ergonomically oil injectors,the service life will be longer.