first members 8 provides an interference or frictional fit against the internal surfaces of the flanges 7 and 9 of track 6 respectively thus once the stud 4 is engaged within the track 6 there is no up and down movement possible due to the frictional engagement of the respective surfaces of the members 8 of respective clips 2 and the interior surfaces of the flanges 7 and 9 a lower portion of member 8 has a pair of angled sides 39 and 40 that meet at a lowest point 41 to form an indicator portion and this allows a user to check the length of stud 4 when it is in situ any sideways movement of the stud 4 that is within the channel or interior space 19 provided in track 6 is prevented when plaster board lining is in place in a wall for example there are some situations where the track 6 need not be screwed or fastened to the stud 4 and in these cases the embodiment of the clip 2 shown in fig4 is used and as mentioned above when the plaster board wall is in place then that prevents the sideways movement of the stud 4 within the track 6 referring to fig1 again there is provided an aperture 34 above the opening 36 that extends through both members 8 and 10 and this allows a fastening means such as a screw 32 to protrude therethrough the screw 32 is shown in fig3 to also protrude through one of the slots 28 in either or both flanges 7 9 of track 6 the plurality of slots 28 allows the position of the track 6 in relation to the stud 4 to be variable and also allows the screw 32 to be able to slide.