Automatic Center features adjustable strength, adjustable spring tension for light or heavy strokes, marking, punching, and staking For a heavy, the cap is screwed down Progressively marks are obtained by turning the cap upward Marks made by the point are uniform in depth and size for each setting 5 ” Center for ideal for leaving sets at your home, garage, and tool box These are the best Automatic Metal Center Automatic Center Punches Knurled surface and centered tip increase control for more accurate and holes Each Center is Chrome plated shank body withstands high force and resists; extremely strong carbon steel tip holds up to hard surfaces, Manufacturer: kmgfsd