A lock system is disclosed for use on an in-line roller skate to positively lock the wheels. The lock system includes a mounting member for mounting the lock to the chassis of a roller skate. The mounting member includes a movable abutment member having a plurality of abutments for selective engagement with the wheels. Hub projections are provided on the wheels for engagement with the abutment member. In another embodiment, the abutment member may comprise a plurality of spaced apart stops for interstitial between wheels to be locked. The arrangements have marked advantages over the existing systems in that the same are readily engagable with a minimum of effort. In this manner, the user can simply engage and disengage the lock device without any encumbrances typically associated with the prior art.
