Drill Pipe Connection Guide DPCG18009 5 7/8″ Drill Pipe /// Drill Pipe Connection Guide DPCG18010 5 1/2″ Drill Pipe /// Drill Pipe Connection Guide DPCG18011 5″ Drill Pipe /// Drill Pipe Connection Guide DPCG18012 4 1/2″ Drill Pipe /// Drill Pipe Connection Guide DPCG18013 4″ Drill Pipe /// Drill Pipe Connection Guide DPCG18014 3 1/2″ Drill Pipe /// Drill Pipe Connection Guide DPCG18015 3″ Drill Pipe /// Drill Pipe Connection Guide DPCG18016 2 3/8″ Drill Pipe