An assembly for irrigation, comprising a first and a second hose (2, 3) and comprising at least one connector (4, 50) equipped with an attachment unit adapted for the removable connection with tools for irrigation or water dispensers, said connector (4, 50) comprising: a first connection element coupled to an end of the first hose; and a second connection element, distinct from said first element and coupled to an end of a second hose; wherein the connector (4, 50) includes a first external body having a substantially annular shape and being removably coupled to the attachment unit; wherein the connector (4, 50) includes a second body having a substantially annular shape that comprises the second connection element, placed inside the first body; wherein said attachment unit is hollow and is provided with an internal conduit for water, which is placed in fluid communication with the first hose and leads outside into an attachment mouth; wherein said first connection element includes a sleeve adapted to be inserted into the end of the first hose and placed in fluid connection with a conduit internal to the attachment unit; wherein the attachment unit includes an annular threaded portion and the sleeve of the first connection element constitutes an axial extension of the annular threaded portion; wherein said attachment unit provides a projecting shank (43, 45) which extends in a opposite direction to said attachment mouth and conforms, in sequence, both the threaded portion and the sleeve that engages the first hose; wherein the sleeve of the first connection element is coaxial to the threaded portion and thinner, defining an annular transversal surface at a most external end of the threaded portion; wherein said attachment unit includes a threaded portion on which a threaded washer is engaged, which is comprised in said first body; wherein the second body is made of rigid or semi-rigid plastic material; the second connection element being interposed between the first and the second hose (2, 3), separating said end of the first hose from said end of the second hose; characterized in that the second body comprises a sleeve, which is adapted to be inserted into the end of the second hose and comprises an end shoulder that abuts against said annular surface of the shank of the attachment unit, defined between the threaded portion and the engagement sleeve to the first hose; the first body comprising an internal abutment shoulder, afforded adjacent or in proximity to an internal thread, intended to come into contact and to push the shoulder of the second internal body, during a screwing step. a first connection element coupled to an end of the first hose; and a second connection element, distinct from said first element and coupled to an end of a second hose; wherein the connector (4, 50) includes a first external body having a substantially annular shape and being removably coupled to the attachment unit; wherein the connector (4, 50) includes a second body having a substantially annular shape that comprises the second connection element, placed inside the first body; wherein said attachment unit is hollow and is provided with an internal conduit for water, which is placed in fluid communication with the first hose and leads outside into an attachment mouth; wherein said first connection element includes a sleeve adapted to be inserted into the end of the first hose and placed in fluid connection with a conduit internal to the attachment unit; wherein the attachment unit includes an annular threaded portion and the sleeve of the first connection element constitutes an axial extension of the annular threaded portion; wherein said attachment unit provides a projecting shank (43, 45) which extends in a opposite direction to said attachment mouth and conforms, in sequence, both the threaded portion and the sleeve that engages the first hose; wherein the sleeve of the first connection element is coaxial to the threaded portion and thinner, defining an annular transversal surface at a most external end of the threaded portion; wherein said attachment unit includes a threaded portion on which a threaded washer is engaged, which is comprised in said first body; wherein the second body is made of rigid or semi-rigid plastic material; the second connection element being interposed between the first and the second hose (2, 3), separating said end of the first hose from said end of the second hose; characterized in that the second body comprises a sleeve, which is adapted to be inserted into the end of the second hose and comprises an end shoulder that abuts against said annular surface of the shank of the attachment unit, defined between the threaded portion and the engagement sleeve to the first hose; the first body comprising an internal abutment shoulder, afforded adjacent or in proximity to an internal thread, intended to come into contact and to push the shoulder of the second internal body, during a screwing step.