tongues on the second member however additional tongues grooves may be located on the bottom of the foot or even on the underside of the arm additionally the second member may include both tongues and grooves combining the features illustrated in fig4 and 47 with fig4 and 49 fig5 represents a shim which can be made from waste cuttings of the core material during the manufacture of the transition this shim may be used to elevate the foot of the assembly to accommodate a thicker flooring material fig5 shows an additional embodiment wherein the second member is a stair molding the pieces i e the t molding and the stair molding can be held together with glue before fastening to the subfloor or by any other installation method described herein in fig5 an additional t molding is shown that can snap fit i e without the need for glue and fig5 shows a corresponding track or structure to be incorporated into a second member specifically the second member piece of fig5 includes a plurality of alternating tongues and grooves such that the foot of the t molding also having alternating tongues and grooves form a snap action that functions to hold the t molding firmly additionally this design permits the elimination of the.