Automatic Centering Doweling Jigs

《Product Introduce 》：

Automatic Centering on ruond, square or irregular
shaped stock up to 2" (50m/m) widgh.
For boring holes, mark the stops on the board edge,line them up with the jig's markings, tighten it and drill.

Item

#BJ0101  Centering Doweling Jig with Four each 1/4", 5/16" and 3/8" hardened steel bushings.
  BJ0102  Centering Doweling Jig with Two each 1/4", 5/16" and 3/8" hardened steel bushings.
  BJ0103  Extra Steel Bushings. Pack of 6 (Two each 1/4",5/16",3/8")