This is a new, custom designed, clamp to work with our t slot tables. This new and improved design is much cheaper than our steel clamps but still tremendously strong. Any table that will accept a 1/2' square bolt head will work with this clamp. The clamp measures 6' end to end, 1.5' wide with a 2.75' long slot. T-slot and vacuum combined table. It has the advantages of both T-slot table and vacuum table. In our opinion,if you use standard 1325 cnc router (1300.2500mm) or 1530 cnc router (1500.3000mm),we recommend T-slot clamp table.If you use 2030 cnc router (2000.3000mm) or 2040 cnc router (2000.4000mm),we recommend T-slot and vacuum combined table.