Rotary 9864 Idler Pulley Replaces: Exmark: 1-633109, 116-4667, 633109, Toro: 1-633109 Fits: Exmark Lazer Z and Lazer XP 60" and 72" decks Toro 60" and 72" Z 500'S Z Master; 74260 Z 597 60" and 72" Decks Height: 1 3/16" ID: 21/32" OD: 6 3/4"