A kind of component for injection device is combined type needle shield and cap member. It includes integral type compressible body made of being moulded as rubber. The cavity for protecting needle is formed in integral type compressible body, the cavity at the first end of the component have opening and it is axially extending in the component. Clamping arrangement is also formed in integral type compressible body, clamping arrangement includes one or more shape and structures, and the shape and structure allows the user of the component to grasp, in order to which user is along the longitudinal axis applied force of the component. Combined type needle shield and cap member have the distal end for being configured to be partially inserted into the main body of injection device. The outer surface of compressible body has step profile, this is with step profile at the distal end of compressible body being configured to be inserted into injection device and the position of compressible body being configured to keep between the adjacent part of the outside of injection device, and wherein the diameter of the distal end of compressible body is less than the diameter of the adjacent part of compressible body.
