Replacement for JOHN DEERE PART # GX20072/GY20570 LA100 LA105 LA110 LA115 LA120 LA125 LA135Part #: GX20072, GY20570Belt Size: 1/2″ x 103″Material: Made with Kevlar CordProduct Description: Our V-Belts are Kevlar Wrapped and are specially constructed for Lawn Mowers with a clutch function and where the belt drive includes a back-tensioner. The external fabric ensures noise-free clutch engagement and increased resistance to wear and heat. The aramid core(Kevlar) offers high tensile strength, no elongation and high resistance to shock loads.Repleacement Model/Part No.:JOHN DEERE GX20072 GY20570This is a 1/2″ x 103″ classical v belt. ON MODELSJohn Deere RIDING MOWER: D100 (Belt, Deck 42″)John Deere RIDING MOWER: D110 (Belt, Deck 42″)John Deere RIDING MOWER: D120 (Belt, Deck 42″)John Deere RIDING MOWER: D130 (Belt, Deck 42″)John Deere RIDING MOWER: LA100 (Belt, Deck 42″)John Deere RIDING MOWER: LA105 (Belt, Deck 42″)John Deere RIDING MOWER: LA110 (Belt, Deck 42″)