a Great Tool Set The drill guide is adjustable to clamp on different thickness of wood boards, is a great tool set for both furniture factory and woodworking enthusiasts.. For Making Different Sizes Of HolesThe clamp is adjustable with rotating knob to fit different thickness of wood boards,Comes with drill bits and wood hole cutter for making different sizes of holes. Accurate Positioning ToolThe drill bushings adopt 60CR bearing steel material, high strength and accurate positioning,Easy to use and install.. It is made of aluminum alloy with good strength and long service life..
