Set of depth stops for drill bits 8pcs

8-piece set of ring depth stops for use in combination with drill bits of 3 to 16 mm diameter for iron, wood, and concrete. The set allows for repeated drilling to the same depth without the need for additional marking of the drill bit or the mounting of accessories to the drill. The stop's position on the drill bit is fixed with a screw with a hexagonal head. The package also includes the corresponding hex key.