Easy to install and compatible with most wheelchair models, these support blocks and rail guides are designed for user convenience. Simply attach them to the designated areas on your wheelchair, and you'll immediately notice an improvement in performance. Their universal fit ensures that you can upgrade your wheelchair without any hassle. Features -Color:White -Material:ABS -Size:3.20X2.70X2.20cm/1.26X1.06X0.86in -Sturdy and reliable: these support blocks are made to be wear-resistant, offers dependable support for your wheelchair -Convenient portability: their lightweight and compact design makes these blocks easy to transport and use anywhere -Easy installation: the universal fit ensures that these support blocks can be quickly and easily installed on most wheelchairs -Comfort enhancement: these blocks provide stable support, improving the overall comfort and usability of the wheelchair -Longevity: using these sturdy support blocks can help prolong the lifespan of your wheelchair by minimizing wear and tear Package list: 30 x wheelchair support blocks