This hollow square tube sleeve is designed to enhance the functionality of fitness equipment by providing a seamless connection between square tubing components. Its durable construction ensures performance, while the sleek design allows for smooth sliding and secure fitting. Ideal for upgrading or repairing exercise machines and workout gear. Features -Color:Black -Material:PP, PA -Size:5.10X5.10X4.10cm/2.00X2.00X1.61in -Fit: specifically designed for 50 to 40 hollow square tubes, ensuring a match for fitness equipment parts and enhancing equipment stability -Lightweight design: the hollow structure reduces weight, making it easier to transport and ideal for outdoor mobile fitness equipment, allowing for easy adjustment of training space -Precision engineering: precision machining reduces wear and extends the lifespan of fitness equipment, lowering maintenance frequency and ensuring a smooth workout experience -Impact buffer: the sleeve design effectively cushions impacts, protecting the tubing from damage, suitable for training environments, keeping equipment looking new -Universal compatibility: the universal design is compatible with various brands of fitness equipment, simplifying the replacement process and quickly adapting to different training needs, improving gym operational efficiency Package list: 8 x Square Tube Insert Sleeve