Chrome plated. For accurate alignment of drill holes when dowel-pinning joinery. Pack of 8 (2 x 6mm, 2 x 8mm, 2 x 10mm and 2 x 12mm). Chrome plated. For accurate alignment of drill holes when dowel-pinning joinery. Pack of 8 (2 x 6mm, 2 x 8mm, 2 x 10mm and 2 x 12mm).