Height:7-1/2″(190mm).Mounting Hole Distance:5-5/8″(143mm).Blade mound: 5 point star shaped.Includes 2 Spindle Assembly,2 Pulley Nut,2 Washer,8 Mounting Bolts,2 Blade Bolt.The mounting holes are pre-tapped for easier installation. Replaces 187292, 192870,532187292, 587125401, 587253301, 21546238, 21546299, 21549012, 532187281, 532192870, 539112057, 532187292, 532192870,12734, 11590, 97798,11590 ,285-585,7-03184, 82-026.Fit for AYP,Sears,,,Oregon 42″ 46″ 48″ 54″ Mower Deck.Compatible ,Poulan, Poulan Pro, Roper. The pulley is placed between the washer and the pulley nut (washer-pulley-pulley nut),otherwise the pulley will be damaged. Grease Zerk removable,easy to lubricate the spindle.Grease Zerk removable,easy to lubricate the spindle.You need to add greaseto prolong the life of the spindle before use it. Spindle Assembly is made of high quality aluminum alloy, which is durable and corrosion resistant.When installing,please wear gloves to protect your hands.