Knob rolling walker accessories are designed to improve the usability of your walker. The star-shaped screw knobs with M6 threads and rubber pads provide a firm grip and easy handling. These replacement parts are ideal for adjusting the height of the walker or securing additional attachments like armrests or seats. They ensure that your walker remains functional and comfortable to use, making them an essential accessory for anyone relying on a walker for mobility. Features -Color:Black -Material:Plastic,Metal -Size: 8.00X3.00X3.00cm/3.14X1.18X1.18in -Screw standard: M6 -Metal materials: made with durable plastic and metal, offering a reliable and solution for walker part replacements -Convenient replacement: facilitates easy replacement of walker parts, allowing users to perform maintenance quickly and efficiently -Effortless installation: the hand tightening feature means no additional tools are required, making installation -Secure fit: includes a rubber pad to provide extra stability and prevent the knob from becoming loose -Universal fit: compatible with m6 specification walkers, ensuring it fits a wide range of brands and models Package list: 2 Replacement Knobs 2 Shape Bolt 2 Washer