Incredibly strong and rigid, these rail mounts will not slip on the rail. Designed for railing sizes larger than 1-1/2 in. (38.1 mm) diameter these oversized horizontal round rail mounts can be used with most Magma Rectangular Gas Grills, Dual Mount Tables, and Tournament Series Cleaning Stations. Made of anodized aluminum and 18-8 stainless steel these rail mounts have a unique pivoting design which allows them to be attached to any straight rail, curved rail or across the corner of a railing.