Set of 10 Shear Pins& Nuts for Ariens: 510015, 51001500. for Snapper -3865, 709155. 510015, 51001500. Compatible with models: ST420-ST924. models: 828D, 924DE, 1032D, 1128DDE, 1128DE, 1332DDE. Set of 10 shear pins and 10 lock nuts compatible.