... it can accept coupler, to realize bar connection. Rebar rib-peeling and threading machine1) Brief introductionFunction : for ... rolling thread on rebar end.Bar diameter : 12,14,16,18,20 ... angle 60°/75°.2# roller , for 25mm-32mm rebar , pitch is 3.0mm , thread angle 60°/75 ... °.3# roller , for 36mm-40mm rebar , pitch i 3.5mm , thread angle 60°/75 ...