New Impeller Kit includes impeller and two o-rings Replaces impeller kit for 1" Magnaflow pump , Glenwood's part number is 60001 Magnaflow 500-1000 These are used on a 1" Magnaflow water pump. Glenwood's part number is 60001. Impeller: 1.975" thick, 2.570" diameter, 8 blades Bronze Insert: .625" dia...