This wheelchair accessory set includes plastic seat rail guides and U-shaped blocks designed to enhance the stability and comfort of your wheelchair. The plastic components are durable and lightweight, ensuring use. These parts are essential for maintaining the proper function of your wheelchair, providing a smooth and secure seating experience. Features -Color:Black -Material:Plastic -Size:4.30X2.80X2.10cm/1.69X1.10X0.83in -Note: Fits 7/8 Inch Tubing. Seat rail guide - 19mm in diameter. -High load capacity: the wheelchair seat slider is designed with high load bearing capacity, enhancing seating stability and suitable for various wheelchair upgrades -Quick installation: the plastic clip structure ensures fast installation and removal, making daily cleaning and maintenance convenient and improving user friendliness -Enhanced frame strength: the u shaped wheelchair tube support enhances the overall frame strength, effectively preventing deformation from long term use and extending the product's lifespan -Noise reduction: the seat tube plastic block is made of wear resistant materials, reducing friction noise and providing a quieter and more comfortable seating experience -Versatile design: specially designed to fit various wheelchair models, meeting different user needs and widely used in homes, hospitals, and rehabilitation centers Package list: 2 x wheelchair sliders