Westin(TM) E-Series Nerf Bars are made of 3in. diameter round tubing and are vehicle specific designs. Step design and mounting technique varies by application (mounting kit included). They feature recessed area mounted step pads unique to E-Series Nerf Bars feature the Westin(TM) brand name and are UV resistant. E-Series 3 Round Nerf Step Bars; Black; Steel; Mount Kit Included; Rocker Mount; 3 in. Round Tube 2023 Toyota 4Runner 40th Anniversary Edition, 2014-2023 Toyota 4Runner SR5, 2018-2023 Toyota 4Runner SR5 Premium, 2014-2016 Toyota 4Runner Trail, 2021-2022 Toyota 4Runner Trail, 2017-2023 Toyota 4Runner TRD Off-Road, 2018-2023 Toyota 4Runner TRD Off-Road Premium, 2015-2023 Toyota 4Runner TRD Pro, 2020-2021 Toyota 4Runner Venture