Little Wonder 4174094 Optimax Parking Brake Kit - Fits all models except 99170Little Wonder 4174094 Optimax Parking Brake Kit Fits all models except 99170 Features: Secure transport and reduce roll offs with the Little Wonder parking brake. The optional parking brake attaches to the main deck of the blower and secures both wheels enhancing stability on hills and in the back of a truck. Dual action spring positioning is easily engaged and disengaged by foot.