7pcs Depth Stop Set For Bormax Series 1622/1630/1663, 10 - 48mm in wooden box, 1621200 Depth stop supported by ball bearing for FAMAG-Forstner bits with exchangeable guide bushings. The depth stop is mounted on the stalk and the drilling depth has to be adjusted. This makes it possible to drill stud holes with exactly the same depth at all times. The bushings are rotatably supported by ball bearings and thus produce no disturbing marks on the workpiece surface, drills Ø10-48mm , 1621, 162120000