This is the Treadmill Doctor Walking Belt for the Precor C942 Treadmill. Fits the following models: Precor, 940,COMMERCIAL TREAD,120V,J (J2), 940,COMMERCIAL TREAD,240V (2Q), 940,COMMERCIAL TREAD,240V,J (3W), 942 (2M, 5L), 942,COMMERCIAL TREAD,120V (2M), 942,COMMERCIAL TREAD,120V,ASMB (5L), 944 - Ver. 2 (1U, 5J), 944 - Ver. 2 (1V, 5K), 944,COMMERCIAL TREAD,120V (1U), 944,COMMERCIAL TREAD,120V,ASMB (5J), 944,COMMERCIAL TREAD,120V,J (2U), 944,COMMERCIAL TREAD,240V (1V), 944,COMMERCIAL TREAD,240V,ASMB (5K), 944,COMMERCIAL TREAD,240V,G (DD), 944,COMMERCIAL TREAD,240V,J (2S), 944,COMMERCIAL TREAD,240V,S (5H).