Abstract: A roller skate is provided, wherein the roller skate includes: a boot including a body portion and a sole, the sole having a longitudinal direction and including two receptacles arranged in interval in the longitudinal direction, each receptacle including a wall and at least one slot open on the sole toward the longitudinal direction, the wall defining at least one opening of the at least one slot; a roller assembly including a frame and rollers disposed on the frame, the frame including two insertion portions arranged in interval in the longitudinal direction, the two insertion portions being respectively insertable in and detachable from the two receptacles in the longitudinal direction, each insertion portion being blocked by the wall of one of the two receptacles in a blocking direction away from the sole; and a plurality of fasteners securing the frame to the sole.

Abstract: A skate is provided, wherein the skate includes: a boot including a body portion and a sole, an inner surface of the sole including a recess which is X-shaped, the recess including four grooves, each of the four grooves including a first positioning structure; a metal member being X-shaped and including four arms, each of the four arms being received in one of the four grooves and including a second positioning structure, the second positioning structure of each of the four arms being positioned to the first positioning structure of one of the four grooves; a roller assembly including a frame and a plurality of rollers disposed on the frame, the frame being connected to the sole; and a plurality of fasteners securing the frame to the sole.