Check the listing for details. 28"x8" Stainless Steel Concrete Slider Knee Boards Pair Sliding Boards with Pads. Color: Silver, Condition: New. Listed at 82.13 USD. Description This stainless steel knee board slider with a built-in toe bracket is a professional knee bracket. It not only protects the knee joint but also provides good support and stability. As an ideal concrete slider tool, the knee sliders effectively avoid excavation and exhibit excellent sliding and finishing properties in wet concrete. They are widely used in the building and construction industry. Key Features Large Area Protection: Measuring 28 "x8 " , it provides you with complete protection from direct contact between your knees and the concrete during concrete renovation work. Sturdy Construction: It is made of 1.2mm thick stainless steel, which is ground and polished to ensure greater wear resistance and sturdiness. Efficient Finishing: The smooth design allow.