half-round-top is part of:

half-round-top contains:

Full expansion for half-round-top:
   100%  1x12x12 Half-Round-Top Lattice Brick
   100%  1x1x1.3 Half-Round-Top Brick w/Plate
   100%  1x4x1.3 Half-Round-Top Brick
   100%  1x4x1.3 Half-Round-Top Brick w/Plate