is oriented over a majority of the opposing surface areas of the buffer member and the pad to effect a fixed securement of the opposing surface areas together so as to provide an area of substantially less flexibility than the individual flexibility characteristic of each of the buffer member and the pad application_number US 81605801 A description a vehicle surface treatment apparatus 10 is schematically illustrated in fig1 and includes an elongate mounting part 11 consisting of a cylindrical core 12 having on the outer periphery thereof a plurality of parallel tracks or grooves 13 extending parallel to a longitudinal axis of the core a plurality of finishing units or surface treating implements 14 are provided and are secured via an inner edge part 16 to the tracks or grooves 13 of the elongate mounting part 11 more specifically the inner edge part 16 includes a flat planar like portion 17 having along a radially inner edge thereof a cylindrical enlargement the diameter of which conforms closely to the width of a base part of the track or groove 13 the track or grooves 13 are each defined by a pair of spaced side walls 19 the radially outer edges 21 of which are spaced apart a width g to define a gap through which extends the flat part 17 of the inner edge member 16 the diameter of the cylindrical enlargement 18 of the inner edge member 16 is greater than the thickness of the flat part 17 as well as the dimension of the gap g so that as the elongate mounting part 11 is rotated the cylindrical enlargement 18 will be retained in the tracks or grooves 13 the surface treating implements 14 are each composed of a uniformly thin sheet like pad of.