Troy Bilt V-Belt part # 1915555 is a 1/2" wide, standard V-Belt. This is the PTO drive belt for the following Troy Bilt Trimmer Mower models; 52027, 52028, 52029, 52036, 52048, 52051, 52066, and 52070. This belt may have applications that we have not listed so please refer to your owners manual if you have questions.