Smooth Rail Caps Black 22-24 Tundra SbSmooth aluminum rail caps are the benchmark for durability when it comes to aluminum rail caps. The satin mill finish is coating free to ensure there will never be any chipping, flaking or rust. These Westcan Manufacturings rail caps are a insert nut blind drilled installation and come with non corrosive and stainless steel hardware. The rail is built from structural grade 1 1 2 aluminum tubing and is complete with a clear anodized finish which will