The T-slot insert linear bearing pad is commonly used with bearings to create linear motion and is made of self-lubricating white UHMW. It has a low coefficient of friction and is designed with rounded corners on the extruded pad, allowing simple installation and replacement. This pad is designed to slide into, and stabilize within, the T-slot. It comes with holes for mounting hardware and brake kits.
For technical details and images, please search for the product using the 80/20 interactive catalogue found here: https://catalogs.8020.net/80-20-Catalog-26/C/.