Raker System is a special designed tools kit, it is used for dangerous buildings and wall. Raker System is composed by pneumatic strut, bases, plate board and some connectors, two pieces of pneumatic strut, two sets of bases and two sets of plate board can be composed to two triangle, triangle is a very stable and strong shape, they can work together and be a simple raker system. For providing a more stable and safer system, some more pneumatic strut and connector are needed to compose the two triangles to a complete set, it is more strong and work as a real team.