Laser Quad Roller Skate Plates - The Hardnose - Designed for the serious speed skater!! Nylon quad roller skate plates, center mount. The 45 degree single action skate trucks - your skate wheels maintain contact with the skating surface longer, allowing for a tighter turn radius and better skate wheel grip overall. Available 7mm or 8mm axle.  Available with calibrated toe stop with double action clamp. (not included) Or takes adjustable roller skate toe stops.