This set has centre punches made of high-quality materials for greater usage strength and durability. Thanks to the centre punch, you can prevent the direct reference marks from slipping and being removed unexpectedly, causing a deterioration of the bits. The purpose for which this centre punch has been designed is to mark a fixed point. This is an excellent tool that can be stored in your car in order to break the window in case of emergency. This set has 5 centre punches in different sizes.