A torque-transmission joint (15b-d) for transmitting torque between a driving shaft and a driven shaft that are arranged in series with each other in an axial direction thereof, the torque-transmission joint (15b-d) comprising: a driving-side transmission member concentrically supported by an end section of the driving shaft; a driven-side transmission member concentrically supported by an end section of the driven shaft; a shock-absorbing member (18b-d) made from an elastic material and provided between the driving-side transmission member and the driven-side transmission member; and a damper section (26a-e) held between end surfaces of the driving shaft and the driven shaft, the driving-side transmission member comprising: a driving-side base section supported by the end section of the driving shaft; and a plurality of driving-side arm sections provided intermittently in a circumferential direction on a surface of the driving-side base section that faces the driven-side transmission member, the plurality of driving-side arm sections respectively protruding in the axial direction therefrom; the driven-side transmission member comprising: a driven-side base section supported by the end section of the driven shaft; and a plurality of driven-side arm sections provided intermittently in a circumferential direction on a surface of the driven-side base section that faces the driving-side transmission member, the plurality of driven-side arm sections respectively protruding in the axial direction therefrom; the shock-absorbing member (18b-d) comprising a plurality of held sections (33a, 33b); and the driving-side arm sections and the driven-side arm sections arranged alternately in the circumferential direction, and the held sections (33a, 33b) placed between side surfaces of the driving-side arm sections and driven-side arm sections that are adjacent to each other in the circumferential direction; and the damper section (26a-e) comprising a thin ring-shaped connecting section, the damper section (26a-e)integrally provided with the shock-absorbing member (18b-d) by way of the ring-shaped connecting section being connected to the held sections (33a, 33b), characterized in that a deformation adjustment section that is concave inward or protrudes outward in the axial direction from an end surface of the damper section (26a-e) is provided in the damper section (26a-e), wherein the deformation adjustment section is configured to allow to change the modulus of elasticity of the damper section (26a-e) by changing the dimension and shape of the deformation adjustment section, so as to adjust the amount of thrust force that the damper section (26a-e) can absorb. a driving-side transmission member concentrically supported by an end section of the driving shaft; a driven-side transmission member concentrically supported by an end section of the driven shaft; a shock-absorbing member (18b-d) made from an elastic material and provided between the driving-side transmission member and the driven-side transmission member; and a damper section (26a-e) held between end surfaces of the driving shaft and the driven shaft, the driving-side transmission member comprising: a driving-side base section supported by the end section of the driving shaft; and a plurality of driving-side arm sections provided intermittently in a circumferential direction on a surface of the driving-side base section that faces the driven-side transmission member, the plurality of driving-side arm sections respectively protruding in the axial direction therefrom; a driving-side base section supported by the end section of the driving shaft; and a plurality of driving-side arm sections provided intermittently in a circumferential direction on a surface of the driving-side base section that faces the driven-side transmission member, the plurality of driving-side arm sections respectively protruding in the axial direction therefrom; the driven-side transmission member comprising: a driven-side base section supported by the end section of the driven shaft; and a plurality of driven-side arm sections provided intermittently in a circumferential direction on a surface of the driven-side base section that faces the driving-side transmission member, the plurality of driven-side arm sections respectively protruding in the axial direction therefrom; a driven-side base section supported by the end section of the driven shaft; and a plurality of driven-side arm sections provided intermittently in a circumferential direction on a surface of the driven-side base section that faces the driving-side transmission member, the plurality of driven-side arm sections respectively protruding in the axial direction therefrom; the shock-absorbing member (18b-d) comprising a plurality of held sections (33a, 33b); and the driving-side arm sections and the driven-side arm sections arranged alternately in the circumferential direction, and the held sections (33a, 33b) placed between side surfaces of the driving-side arm sections and driven-side arm sections that are adjacent to each other in the circumferential direction; and the damper section (26a-e) comprising a thin ring-shaped connecting section, the damper section (26a-e)integrally provided with the shock-absorbing member (18b-d) by way of the ring-shaped connecting section being connected to the held sections (33a, 33b),