Drill Center for Dowel and Tenon 12mm I.D. Woodworking Doweling Tool 10 Pcs

Specifications: Product Name: Dowel Center Material: Steel Surface Treatment: Chrome Plated Diameter: 12mm (1/2 inch) Total Size: 14mm x 16mm (L * Max. Diameter) Package Contents: 10 x Dowel Centers How to Use: 1) Drill holes on the first block. 2) Place the matching-diameter dowel centers into the holes. 3) Joint the second block onto the dowel centers use a hammer to knock on the block. 4) The cusp of the dowel center will leave a mark on the second block. 5) Drill holes on the center of the mark on the second block. 6) Plug the round tenon into the holes to connect two blocks without any misplacing.