This UltraVac Completing Drive Kit fits Radius 48" X-Series Heavy Duty Mowers. It includes a splined drive jackshaft, small belt cover bracket, 48" belt cover, carriage bolt (part 3230-2), bolt retaining ring, 3 prong knob, grass catcher shaft, roll pin, round plastic plug, blower belt, traction decal warning, (2) weights, (2) carriage bolts (part 3231-2) and (2) flange nuts. Made for easy installation and use, this kit will help ensure the best service life possible.