MP87 50mm ball and pin black hitch commonly fitted to commercial vehicles to allow hitch or towing eye trailers to be towed. D value = 20Kn, S value = 350Kg. Approved to UN/ECE Reg 55. Features 2 x M16 mounting bolt fixing holes with 90mm fixing centres. Approval number: E11 55R 0111231. UN/ECE Regulation 55 replaces EC94/20 towbar regulation and is similar but with additional test and administration requirements. All Maypole towballs and ball pin hitches are approved to Reg 55.