In-line skates

An in-line skate comprising:

• a) a boot comprising a sole part, and a foot accepting part;
• b) a wheel frame comprising a top mounting board, a first side mounting board, and a second side mounting board, wherein the top mounting board meets with the two parallel side mounting boards, forming an wheel accepting groove, and the side mounting board comprises an inner surface forming the groove and an outer surface, wherein the wheel frame comprises a plurality of holes provided in the first side mounting board and the second side mounting board of the wheel frame;
• c) two or more wheels;
• and
• d) two or more wheel mounting devices for mounting the wheel-axle assemblies on the side mounting boards of the wheel frame,
• wherein the wheels are selectively attached on the outer surface of either the first side mounting board or the second side mounting board, or between the inner surfaces of the first side mounting board and the second mounting board.