Features: Crafted from sturdy plastic, this 2 piece oil bubble assembly set ensures long time performances and a perfect fits for 139 tube models. Featuring a robust design and hassle release installation, each oil cup delivers secure sealing and efficient operations in demanding conditions. Ideal for mechanics, maintenance professional, and craft enthusiasts working with hydraulic systems or industrial machinery. Designed for workshop and factory applications, these oil cups prevent leaks and maintain optimal lubrication in high pressure equipment and automotive tools. The accuracy molded plastic construction resists corrosions and wear, making this set a cost effective upgrade for extending equipment service life. Specifications: Materials: Plastic + Rubber Size: 24cm/9.44inches Quantity: 2 Pieces Package Includes: 2Pcs 139 Oil Pipex2+Small Oil Cup + 2Pcs Hole Oil Plug note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.