This liner sleeve for square tubes is an essential accessory for any project requiring the connection of tubes with different sizes. Made from durable plastic, it offers durability and resistance to environmental factors. The hollow design ensures easy installation and a secure fit, making it ideal for use in construction, plumbing, and other structural applications. Features -Color:Black -Material:Plastic -Size:6.00X4.00X4.00cm/2.36X1.57X1.57in -Durable plastic: crafted from practical plastic material, ensuring durability and reliability -Precise adapter: the square tube size adapter ensures precise and easy installation and connection -Versatile functionality: the hollow sleeve and liner sleeve design make it suitable for a wide range of applications and needs -Effective isolation: provides effective protection and tool for tubes, extending their service life and maintaining their performance -Wide range of applications: ideal for various equipment and devices, extensively used in construction, industrial, and other sectors Package list: 6pcs x square tube reducing sleeves