APPLICATION – This tool set used on Oil seal numbers 142-5867, 142-5868, 2W1734, 336012 and 319-0785. Suitable for Caterpillar CAT 3406 3408 C15. REPLACEMENT – Substitute for Caterpillar CAT 6V-6142, 6V-6143, 5P-1737 (3), 9S-8858 and 5P-1733. SUPERIOR MATERIAL – Crafted from high standard forged Steel with black finish for great durability and strength, resistance to corrosion, providing a long-term service. Function – Used to easily install the oil seal and avoid damage to the car parts. This tool is required to protect your rear seal from leakage. After-sales service – If you have any dissatisfaction during use with our products.You can request a full refund within 30 days to support a 12 month warranty.Professional and sincere service allows you to purchase without risk!