SuooTci Automatic Center Punch 5 Inch Spring Loaded 2 Pack Center Punch For Metal with Adjustable Tension Punch Tool for Metal(Two Replacement Tips Included)

These center punches are spring loaded and therefore can be used with one hand when making an accurate center punch. I tested the punch on hardwood, aluminum, and hardened steel and it worked perfectly on all three materials (in the attached photo the hardened steel is on the left and the aluminum is on the right). They are well made and the knurled barrel make them easy to hold and use. An aspect of the center punch that I really like is the ability to accurately make the center mark. This can be accomplished by bringing in the center punch point at about a forty-five-degree angle to your mark, rotating the punch so that’s it’s vertical to your material, and then simply pushing down on the punch. Perfectly place center punch to start your drill. Two punches with two spare tips are a great value. Wish I would have had these years ago. I recommend the SuooTci Automatic Center Punch.