These are Du-Bro 2-56 Threaded Rods 48" long.                  
                                                                               
FEATURES: Steel construction                                                   
          Threaded on one end                                                  
                                                                               
INCLUDES: 1 threaded rods                                                     
                                                                               
REQUIRES: Coupler and/or Clevis. Can use (but not limited to) the following:   
               GPMQ3831 Threaded solder coupler                                
               GPMQ3790 Threaded steel clevis                                  
               GPMQ3810 Solder clevis                                          
                                                                               
SPECS:    Length:        48"      (122cm)                                      
          Thread Length:   .75"    (19mm)                                      
          Diameter:        .072"  (1.8mm)