The replacement part is made of high-quality aluminum alloy. Includes top nut, spindle assemblies, blade bolt kits, mounting bolts & grease nipple, pulley lock nuts, spacer. The mounting holes are pre-drilled for easier installation. The spacer must be installed under the pulley. Installation with the spacer on top of the pulley (or failure to use the spacer) will result in damage to the shaft and pulley. For , , , , & ayp 42 inch, 46 inch, 48 inch and 54 inch decks. Fits for 54 inch P54ZX. For ayp/ 42 inch, 46 inch, 48 inch and 54 inch deck lawnmowers & riding mowers Models with 4 screws: 187292, 192870, 532187281, 532187292, 532192870, 539112057, 587125401, 587253301. : 21546238, 21546299, 21549012. : 192870, 532187281, 532187292, 532192870, 539112057, 53911207, 587125401, 587253301. : 532 19 28-70. : 532187292 532192870. 80-12-001. rotary 11590. 82-026 and others. Color: silver Material: Aluminum alloy Package contents: 1 x Spindle assembly Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.