for Series Gearbox Main Shaft Nut Tool Equivalent to for special tool 600300. This tool is used to tighten the main shaft nut on the end of the gearbox output shaft to a torque of 85 lbf.ft. Socket comes with a 1/2 inch square drive that dirs. a standard ratchet or torque wrench. Gearbox nut is NOT included with the tool Color: Black Material: Aluminum Package Contents: 1 x Spindle Nut Removal Tool Only the above package content, other products are not included. Note: Light shooting 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.