A tube assembly, comprising: a corrugated tube having an inside diameter and a plurality of corrugations having an alternating smaller outside diameter and larger outside diameter; and a coupler, comprising: a hollow shaft configured to be inserted within the corrugated tube; a flange surrounding at least a portion of said hollow shaft and having a width larger than the inside diameter of the corrugated tube; a first arm attached to said flange by a first flexible hinge and defining a first clamp configured to engage an outer surface of at least one of the plurality of corrugations when the first arm pivots about the first flexible hinge; and a second arm attached to said flange opposite said first arm by a second flexible hinge and defining a second clamp configured to engage the outer surface of at least one of the plurality of corrugations when the second arm pivots about the second flexible hinge wherein the first clamp and the second clamp each have an edge configured to contact the corrugated tube defining an arc, said edges configured to engage at the outer surface of least one of the plurality of corrugations, characterized in that the arc has a measurement between 95° and 85°. a corrugated tube having an inside diameter and a plurality of corrugations having an alternating smaller outside diameter and larger outside diameter; and a coupler, comprising: a hollow shaft configured to be inserted within the corrugated tube; a flange surrounding at least a portion of said hollow shaft and having a width larger than the inside diameter of the corrugated tube; a first arm attached to said flange by a first flexible hinge and defining a first clamp configured to engage an outer surface of at least one of the plurality of corrugations when the first arm pivots about the first flexible hinge; and a second arm attached to said flange opposite said first arm by a second flexible hinge and defining a second clamp configured to engage the outer surface of at least one of the plurality of corrugations when the second arm pivots about the second flexible hinge wherein the first clamp and the second clamp each have an edge configured to contact the corrugated tube defining an arc, said edges configured to engage at the outer surface of least one of the plurality of corrugations, characterized in that the arc has a measurement between 95° and 85°. a hollow shaft configured to be inserted within the corrugated tube; a flange surrounding at least a portion of said hollow shaft and having a width larger than the inside diameter of the corrugated tube; a first arm attached to said flange by a first flexible hinge and defining a first clamp configured to engage an outer surface of at least one of the plurality of corrugations when the first arm pivots about the first flexible hinge; and a second arm attached to said flange opposite said first arm by a second flexible hinge and defining a second clamp configured to engage the outer surface of at least one of the plurality of corrugations when the second arm pivots about the second flexible hinge wherein the first clamp and the second clamp each have an edge configured to contact the corrugated tube defining an arc, said edges configured to engage at the outer surface of least one of the plurality of corrugations, characterized in that the arc has a measurement between 95° and 85°.