* No alteration of OE exhaust systems required * Accommodates all standard vehicle suspensions * 2-5/16 inch forged, heat treated zinc ball standard, 3 inch ball optional * Spring loaded chrome sliding pin insures positive ball lock * Lockable to prevent ball theft (lock not included) * Magnetic cover protects ball hole and activating lever slot when not in use * In-truck platform may be used with rail kits or installed on any vehicle providing adequate structure to secure the platform * In-truck platform is rated for 30,000 lbs. gross trailer weight and 7,500 lbs. vertical load and tested to V.E.S.C. - 19 specs for 30,000 lbs. gross vehicle weight rating * Rail kits are rated to match manufacturer Us vehicle weight ratings * Spring loaded safety chain loops included * Requires installation rail kit