The depth stop set from wolfcraft enables you to obtain precise drill holes in the preset drilling depth. The set contains 3 depth stops in Ø 6, 8 and 10 mm, which are compatible with all commercially available wood twist drill bits in the matching diameters. The Allen key supplied enables you to obtain the desired drilling depth with millimetre precision. They can be mounted on the drill bit quickly, simply and permanently while their special geometry will prevent skewing. After you have set the drilling depth once, you will be able to create a series of depth-restricted holes with millimetre precision on the drill bit.