New LUNA Heavy Duty Aluminium Corner Crimper 'Best in Class' The K120 Hydraulic Aluminium corner crimping machine offers the fastest and easiest way to assemble awning and sash windows. All o.... The ...

There are also locking or splined styles that can only be removed with a special tool or key. Instead of lug nuts, many cars, notably European makes, use a lug bolt. Steel is the most common ...