Features: 1.Ideal Application: The gearbox overdrive mainshaft nut tool is specially designed replacement for Land Rover Series with 600300 manufacturer part number. 2.Better Engagement: The tool is engineered to tighten the mainshaft nut at the end of the gearbox output shaft to a torsion of 85lbf.ft, which can ensure better engagement between the tool teeth and the spindle lock nut. 3.Professional Structure: The gearbox overdrive mainshaft nut tool is professionally designed with a 1/2in square driver which is a standard ratchet or torsion wrench for higher working efficiency. 4.Durable Material: Made of carbon steel and galvanized with tempered process to make sure high tensile strength and good ductility, excellent impact resistance and wear resistance. 5.Professional Production: Heavy duty gearbox mainshaft nut socket has undergone extensive quality and safety testing to ensure long service life and strong durability. Specification: Item Type: Gearbox Mainshaft Nut Tool_x000D_ Material: Carbon Steel + Galvanized_x000D_ Color: Black_x000D_ Manufacturer Part Number: 600300_x000D_ Fitment: Replacement for Land Rover Series PackageList: 1 x_x000D_ _x000D_ Gearbox Mainshaft Nut Tool Note: 1. Please double check the part number of your item, matching information is for reference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!