These hard word legs can be used for table top playing or sitting on the floor and still utilizing your Trinity Stand. Rubber feet prevent any sliding. 
They come in 3 lengths. 6 inch, 4 inch or 2 inch.
6 inch is recomended for tall players or those who use a cushion to sit on while seated on the floor.
4 inch and 2 inch will bring pan closer to the floor. 
6 inch adds an overall height from floor to top of stand of 8.25"
4 inch adds an overall hieght from floor to top of stand of 6.25"
2 inch adds an overall height from floor to top of stand of 4.25"
Purchase seperately or all three lengths and save.