4 sizes A total of 16 pieces: The package contains 4 different sizes of centering tips, 4 pieces per size: 6 mm 8 mm 10 mm 12 mm, the essential dimensions ensure the various installations of furniture or artist objects. Material: the pin is made of steel and has good solid marking properties, you so can use it on hardwoods and cork. General functions: With these dowel centers, you can align dowel holes in drilled parts to accurately mark the drilling position in the counterpart. Treated with exterior marking points. Convenient and practical: first drill the wooden board and align the center with the other wooden block. Then the other wood block has the center point mark, and the mark is punched with a drill and the last two pieces of wood are combined accurately and without offset. Wide uses: Our wood alignment tool, which is used for installing cabinet, wardrobe, table, bed, bookcase, etc. Suitable for anyone who works with wood or wood crafts. Note: The data is all manually