Double head center can be used on any surfaces,either wood or metal,and the powerful allows it to perfectly center,highly visible marks on surfaces.This makes it easy to the surfaces without having to worry about accuracy or visibility. Perfect driver tool to easily remove rivets,small screws,mandrels.This makes it easy to remove these items without having to use other tools. Hinge pin remover flattens and removes hinge pins effortlessly and can be used without moving the object and without damaging the item by moving it.This makes it easy to remove the pins without having to worry about damaging the item or having to it Heavy duty automatic center with adjustable features a lightweight,knurled steel handle for a positive grip and easy handling.This makes it comfortable to use and easy to maneuvers,allowing you to make precise and accurate marks. Double head set allows you to quickly holes in the wood to be used for marking.This makes it easy to the wood without having to use other tools.The double head also allows you to put small nails at both ends to into board.