Hellermanntyton mounting base ra and rb series hellermann tyton 151 13021 the hellermanntyton 151 13021 ra13 is a self adhesive clip that is ideal for use in applications which are difficult to access or for areas where self adhesive is the only possible fixing method for example where fixing holes would be unacceptablethis one piece fixing clip is for a quick and easy installation hellermanntyton 151 13021 ra13 n66 na c1 mounting base