It is a type of coupler which is designed for the projects where the steel and reinforced concrete are mixed. One side of the coupler is in the shape of opened face for welding and the other side of the coupler is in the shape of heading gear system. The transition from the steel to the reinforced concrete is provided via a coupler with this technique. The coupler is welded to the steel area in using this coupler. Cold-heading gear is screwed to the rebar coupler and the mounting is completed.

1 rebar with short gear
1 plastic protective plug
1 coupler