The BenchK fixing screw set for BenchK wall bars is suitable for both pre-assembly and push-through assembly. The BenchK ladder screws with Fischer expansion plugs consist of two components: The expansion wings of the red element provide expansion and extra protection for the grey element made of high-quality nylon. The result is highly load-bearing screws that are easy to screw in and tighten for secure fastening of stud walls. The risk of over-tightening is avoided and the moulded edge of the pin prevents it from falling into the hole. In addition, the serrated shape on the side of the plug prevents it from turning during installation.