... type:Hex 25,Hex28,R32,,R38,R45,R51,H32,Hex35,T45,T51, Length:1000mm-6100mm extension rods,driftiing rods BETOPPER Drifting ... extension rods, there are R22,R25,R28,R32,R38,T38,T45,T51,ST58,GT60 threads, and different length of rods are ... & Round MF rodsRd51T51-T513660T51-T511220T51-T511525T51-T511830T51-T512435T51-T513050T51-T513660 T45 (1 3/4") Drill Rods for Drilling machine