Plastic Deck Wheel / Exmark 103-8415Pack Size:1Exmark 103-8415J. Thomas JT-0136, NHC 226-0117, Oregon 72-020, Rotary 12015, Sunbelt B1EM19, Sunbelt B1EM38Exmark Lazer Z with 46", 50", 56" Triton decks and 60" non Triton decksBore: 5/8 ", Tread: Smooth, Wheel Size: 5x3 1/4, Hub: 2 1/2 "