4Pcs Rubber Coated Magnets, 30LBS Bolt on Magnets with M6 Threaded Studs and

4Pcs Rubber Coated Magnets, 30LBS Bolt on Magnets with M6 Threaded Studs and Nuts, Strong Flag Neodymium Magnet Mount Base with Rubber Coating Non-Slip, Anti-Scratch for Light Bar and Add Mirrors. 【Multi-Use of round strong magnetic thread】M6 Standard female thread hole with one Screw, the assembly with Male M6 thread stud can directly be screwed into it or the Screw going through a hole of assembly body and fastened.