ALL STANDARD SIZES - 5, 6, 6, 8, 8, 10, 12 x 160mm total length. Drilling depth 110 mm. Allows you to drill all standard dowel holes, from ceiling fixtures to heavy duty dowels. 6+8 DOUBLE DRILL BIT - These two sizes of drill bit are especially used. This is exactly why we decided to double our drill bit set with these dimensions. COMPACT PACKAGING - Thanks to the handy rotating box, the set fits in any briefcase standard drill bit. 4 - FULLY HARD METALS CUTTING - as well as a quadruple transport helix allow rapid drilling progress, with at the same time a very long service life. Even reinforced concrete is no longer a problem. Due to factors such as manual measurement and display differences, there may be slight differences between individual products and pictures, please excuse me.