Bosch Reaxx Reaxx Activation CartridgeDual activation cartridge unit two single shot cylinders for two separate activations with each cartridge Easy system reset takes less than 60 seconds after blade drop, with no damage to the blade Wide ranging blade compatibility works with nearly all standard 10 In. fine finish and construction grade blades and stacked dado blades Jobsite tested shown to work in dusty, tough jobsite conditions Designed for a 20 year shelf life each of the dual