of all sides of the mounting collar 80 and align with the lugs 92 on the front of the t post when the collar is in place between the lugs these depressions 87 assist in aligning the collar with the lugs whenever the collar is moved upwardly or downwardly to engage the corresponding lug 92 on the face of the t post fig1 shows a t post 90 94 with a collar 80 in place at a point intermediate its length and located between two adjacent lugs 92 on the front of the post to attach the collar 80 between adjacent spaced lugs 92 on the t post 90 94 a camming wedge 50 is used the wedge 50 is illustrated in position in fig1 just prior to utilization to assemble the collar 80 onto the t post 92 94 as is apparent from an examination of fig1 the wedge 50 has a generally hollow t shaped configuration with a front face 51 for engaging the internal surface of the collar 80 which is located opposite the edge of the rear leg 94 of the t post a pair of sides 54 and 55 extend perpendicularly to the surface 51 and fit in the collar adjacent the internal surfaces of the collar 80 on opposite sides of the t post these sides then fold inwardly a short distance 57.